Love your videos, very informative. Just finished installing Hyperpro progressive springs on my KTM 390 adv. Had trouble holding down spring to loosen top cap, so jerryrigged a spring compressor with a T handle spring tool and a ratcheting tie down strap! Wrapped the strap around the bottom of the fork leg, then attached the ends to the T handle. Just a few clicks and the nut was exposed!
If you want to "tune" the oil level or air gap of any fork there is a better and more accurate way. Assemble the fork, open all adjustments, put a zip tie on the fork leg and manually compress the fork until the spring/fork bottoms out, you should feel a solid "stop". This first step should be done with "low" oil level or too large of an air gap. The zip tie indicates the "spring" bottom out limit, mark the bottom of the zip tie position on the fork leg with a marker. Now start adding oil, the correct oil level will prevent the "hard" bottoming out, what you want is a "soft" air gap bottom out function. When the correct oil level is achieved, the zip tie should stop the fork about 1/4 or so of an inch above the spring "stop". With this correct oil level, the compressed air (as the fork compresses) provides additional resistance, it's air ride time. Too much oil, will limit the travel and will blow out your fork seals eventually. I do this to all my cheap bikes here in Indonesia and it really helps.
Thank you for doing this walkthrough. Gave me confidence to tackle it myself. I used a string tied to the top threads to hold the internals up while putting the spring and spacers over. The straw trick is real world application of childhood games. Thanks for that! 🍻
Just did this mod for my forks, and you're right, much better ride. Front end sits higher, and uses more of the available travel. Like you said, we also gained back a little ground clearance that we gave away with the Black Dog skid plate. Great idea for using the bicycle stand to hold the fork while working on it!! Never would have thought of that one.
Nice video. I'm happy that there is someone out there stateside making meaningful modifications to this motorcycle. I picked one up probably a couple months ago at this point and the only thing I changed out was the windscreen after watching your video. I do a little more road riding but than off-road riding but once I start getting the ear put together I'll go on longer trips. Just know that there are people out here that appreciate your videos Man. If you find yourself around the Pennsylvania area try to let me know we have a pretty nice network of roads and trails around here
@@advmatt I'm still exploring but there's a few BDRs out here and some people did a while Facebook page on a "cross PA adventure trail" with a few different gpx files you can download.
You are the only English speaking person who does any of this stuff on UA-cam. Thanks again. I’m about to order their lowering set of shock and fork springs if I can find a solution for the kick stand. As dropping an inch or more is gonna make that a major issue.
@@SticksAandstonesBozo well that's no good. Find someone who can weld. Have them cut off the bottom inch or so of you kick stand and weld a new big foot to it. I would check and see just how upright your bike is after lowering it with the kick stand down.
@@advmatt yeah that’s my plan. I can weld I just am busy and doing so many other things. But if I have to cut it and add a new foot and powder coat it I will just a lot of work for a kick stand lol
outstanding Matt! You're doing all the experimenting and product testing for us. I ride very much as you do. I use paved roads to just get off-road and spend my time in Colorado, and Utah. Please give us an update when you feel you've ridden all the trails you normally would and have a good feel for your "new" ride. Thanks!
Everything went fairly well for me except I can’t get the rebound clicker to engage and stop spinning clockwise. It worked before I took it apart. The damper rod doesn’t seem to be floating in the cartridge at all. I had a spacer at the bottom of my old spring too. I felt like that should go up top but left it on the bottom since that’s where is started.
That doesn't sound right. Something appears to have disengaged on the adjustment. The position of the spacers may also effect oil volume but should work fine.
love this video, highly useful. I am about to upgrade my 390 adventure's suspension, just wonder if this hyperpro spring can increase the length of the suspension? I think the original length(170mm) is a little bit short.
Thank you for this video. I have a question, the hyperpro progressive springs from a spanish distributor, come in a kit with a SAE 15 fork oil. Did you change visqosity due to your upgrade, or did you stick with the ktm`s recomandation of SAE4?
Thanks once again for the great content! Seriously underrated channel! Hope you grow fast Matt. Took the liberty of sharing your video in the KTM 390 Adventure Forum (Facebook)
Thx for the video! Very informative. A must for 390 Adventure owners who want to be less dependent on dealers. As a EU-Spec 390 Adventure owner myself, I wonder if you will do a fork seal & dust cover replacement video in the future. That will be phenomenal for 390 adventure owners worldwide. Once again, thank you very much for making those awesome videos!!
I weigh about 250 with gear on . Should I increase the thickness of the fork oil , if so how much do you recon ? Thank you for your videos as they are very helpful
You could, but I weigh about 230 with my gear and ride mostly fully loaded for camping and still have plenty of adjustment on the forks. The recommended fork oil weight is 5w, you could go to 7.5w but I wouldn't go any heavier.
hello, thank you for this video 👍 Following that I also installed the hyperpro springs but strangely I found that I lost comfort, the bike is now very firm on small shocks. did you feel that too? Thanks 👍 I am considering removing the second 10mm ring, what do you think?
It depends on what you weigh and where your compression is set, right fork adjustment. I weigh 210 pounds. I run the compression at the mid point, where before I nearly had set it to the firmest setting. My opinion is, if you weigh less than 175 lbs you might want to remove the spacer and use the compression adjustment to dial in the feeling you want. If your bike doesnt have suspension adjustment you might want to remove the spacer as well.
Hi Sir，I bought a pair spring and prepare to install by myself too. May I ask how big is that wrench? and how thin it gonna be to fit into that nut? Thank you so much!
I don't exactly remember the size. I think it was 18mm. I used an adjustable wrench, but a thin set if metric wrenches would have been better. Getting to the nut is the hardest part of the job.
How are the springs working out now that you have put some miles on them? Notable difference to the stock feel? Moderate difference? Did you 'need' to take out that spacer? Would it have added some height to the front of the bike, or perhaps a touch of ground clearance? (though the rear should be mated to it of course if the height did change) It is the ease at which these bottom out in a quick up and down rut situation that needs addressing for me, even with the compression set all the way up it still hits. Otherwise stock is not horrible for a budget bike, quite impressive. Everything could be better I suppose, my 890R was great stock, but I still had suspension work done, both front and rear, and of course it is even better. Either way, its going into the suspension shop for them to have a look and see what they recommend. I will let them know your feedback on this upgrade so we have a point of reference. Thanks Matt, keep up the good work.
There are a lot if questions here so let me see if I can answer all your questions. The new springs made a huge difference. The bike now sits at a proper sag, around 30%, not 45%. I had to remove one spacer because the new spring is longer. Keeping that spacer would be too much preload and your sag would not be enough. I have only bottomed the fork one since changing springs. I run the compression damping at 15 clicks or the mid point and the rebound is around 10 clicks from open. The bike tracks so much better now. The ground clearance is improved because of proper sag. I didnt change the rear spring because I plan to upgrade the rear shock, but if you keep the shock replace the spring. All bikes need a suspension tune to fit riders weight and riding styles. Factory bikes are very generic. Thanks for watching.
I didn't change the oil when I changed the springs. I think using the oil Hyperpro provides with the spring kit is a good oil. When choosing an oil you want to also consider how you want the fork to perform. If you are heavier you might want a heavier weight oil, if you are lighter you might want a lighter weight oil. As for the spring rate, Hyperpro does not list the rate. The progressive springs have a variable rate based on compression. I think the initial spring rate is slightly higher than the stock springs and then the rate increases from there. I don't know the fully compressed spring rate. Cheers.
Compression leg, left side, is set around 14 clicks from fully open. Rebound is set around 10 clicks from fully open. The settings will be dependent on your weight and how you ride. Cheers.
I am doing this mod today. Just wondering what your final opinion is on how many spacers to take out and leave in? Also, how many clicks on compression and rebound did you end up doing?
I left all the spacers in if I remember correctly, without rewatching this video. I left them in due to my weight of over 200lbs. If you weigh less you might be able to drop one of the spacers. My compression setting is about a third of the way open and my rebound is around the mid point. I don't remember the exact settings but those are good starting points.
The fork springs are one size fits all, for the shock it's supposed to be weight matched but I don't think that is actually the case, I think the weight adjustment is for damping and preload from shop.
Is there any problems keeping the rear spring linear? I didn't find a progressive spring for the rear suspension of the versys x 300, only front springs.
The handling of the rear end will not work as well. I have found the rear end tends to blow through its travel much more frequently due to the inbalance of the suspension. I try to ride the bike within its limits and it is manageable.
Does Hyper-pro offer a linear spring or cartridge kit for the 390 ADV? Did you contact them directly? I just had my sag checked and the tech couldn't do anything with the front end and replacing the front spring was the only suggestion they had. They are struggling to find any spring options so I thought I would ask you... Thanks in advance.
There isn't a cartridge option for this fork. I dont know about a linear fork but the progressive does a really good job. Hyperpro seems to he the only company offering a fork spring for this bike.
@@advmatt I will keep you updated. I am intrigued by HyperPro since they are NH based and I live in the Granite State. I will contact them Monday and hope to gain some knowledge. The lack of options combined with wait time is very frustrating for just about everyone right now so I appreciate the reply and wish you the best riding possible.
My only hesitation with this bike is the ground clearance, it’s such a perfect bike other wise power and looks.. how do you find it off road I’m wanting to do some serious off-roading (I’ve got spiked wheels I can put on this bike)
The ground clearance can be a bit limiting but with this bike I can pick my lines and slowly pick my way through jeep trails. As an adventure bike it is fantastic, but it is not an Enduro bike. I have ridden way more rugged terrain on this than my R1200GS, and I pushed that bike. Ride it within its limitations and it is great.
I am considering changing the springs on my bike. Would you advise doing front and rear at the same time? Also what is your mass including riding gear?
It's best to both front and rear at the same time but I didnt because I plan to install an aftermarket shock. My weight with riding gear is probably around 235 or so pounds.
@@advmatt Thank you very much for the reply! I am very happy with the bike and am in the process of modifying it to better fit me. In terms of weight I am a bit lighter, but not much. The springs should work. Now I have to decide if I want a purple or a black spring for the shock...
If your fork seals are leaking you should replace them. At some point the seals cant be saved. While the fork is disassembled replace the springs and oil.
@@advmatt I guess the question is would it be worth it to do this upgrade since as you said the seals need to be replaced. I don’t ride off-road nearly as much as you, just some dusty dirt roads in the mountains. Nothing crazy.
@@pranay4915 factory right now. I plan to change the oil and go to Motorex. I might be wrong on the fork weight, it might be lighter, but I plan to use 5wt.
Shock spring, yes, I am not sure what to tell about the fork springs. I think the fork springs are too soft stock. The bike sags 40% on it's own weight before sitting on it. You could install a progressive spring and keep the compression damping very open. It will make a noticable difference.
I purchased them from EPM Performance in the United States. You can also go to Hyper Pro's website. Depending on where you are you can order from their website.
so I’m curious, did you end up staying with the two spacers (one long, one 10mm IIRC)? Would really love to find adjustable preload APEX caps… FWIW, the KTM part number for the 45 MM (oddly shaped) fork cap tool is T14091 (like 25$ from my local dealer)
I removed one spacer and kept the other. If I remember correctly I kept the 10mm. The second spacer on one leg consisted of a several smaller ones. I did not want to reinstall those. I need to look into getting that fork tool. Thanks.
I just wanted to let you know that, even though it's been a couple of years since you created that video, people are still using it as a guide to help update their own 390s. I must say, however, that your 21-minute video took me hours to complete. I had a particularly hard time compressing the spring when putting it back together, around minute 12:22 in your video. Despite the challenge, I really appreciate your effort in creating the video, and I hope you keep the content coming. ua-cam.com/video/7gCt_6RVzGY/v-deo.htmlsi=tX6dZ2lBaN0P1ZJt&t=742
Love your videos, very informative. Just finished installing Hyperpro progressive springs on my KTM 390 adv. Had trouble holding down spring to loosen top cap, so jerryrigged a spring compressor with a T handle spring tool and a ratcheting tie down strap! Wrapped the strap around the bottom of the fork leg, then attached the ends to the T handle. Just a few clicks and the nut was exposed!
If you want to "tune" the oil level or air gap of any fork there is a better and more accurate way. Assemble the fork, open all adjustments, put a zip tie on the fork leg and manually compress the fork until the spring/fork bottoms out, you should feel a solid "stop". This first step should be done with "low" oil level or too large of an air gap. The zip tie indicates the "spring" bottom out limit, mark the bottom of the zip tie position on the fork leg with a marker. Now start adding oil, the correct oil level will prevent the "hard" bottoming out, what you want is a "soft" air gap bottom out function. When the correct oil level is achieved, the zip tie should stop the fork about 1/4 or so of an inch above the spring "stop". With this correct oil level, the compressed air (as the fork compresses) provides additional resistance, it's air ride time. Too much oil, will limit the travel and will blow out your fork seals eventually.
I do this to all my cheap bikes here in Indonesia and it really helps.
Great way to measure the oil. Thanks for the tip.
Thank you for doing this walkthrough. Gave me confidence to tackle it myself. I used a string tied to the top threads to hold the internals up while putting the spring and spacers over. The straw trick is real world application of childhood games. Thanks for that! 🍻
Glad you found it helpful. The string idea is great.
@@advmatt also, its a 22mm thin wrench on the lock nut.
Just did this mod for my forks, and you're right, much better ride. Front end sits higher, and uses more of the available travel. Like you said, we also gained back a little ground clearance that we gave away with the Black Dog skid plate. Great idea for using the bicycle stand to hold the fork while working on it!! Never would have thought of that one.
Glad it worked for you. Those springs are a pain to install but worth it.
I love the honesty at the end. Oh and the struggle is real. Thanks for the content.
14:40 "the eye of the tiger" hahahaha , very nice video even 3 years later ...
It was extremely difficult.
Thanks for this video. I have the springs in hand and you've shown that installing them may be something I can do myself.
Nice video. I'm happy that there is someone out there stateside making meaningful modifications to this motorcycle. I picked one up probably a couple months ago at this point and the only thing I changed out was the windscreen after watching your video. I do a little more road riding but than off-road riding but once I start getting the ear put together I'll go on longer trips. Just know that there are people out here that appreciate your videos Man. If you find yourself around the Pennsylvania area try to let me know we have a pretty nice network of roads and trails around here
Thanks for the feedback. I want to get out to the east coast at some point because I keep hearing how good the riding is.
@@advmatt I'm still exploring but there's a few BDRs out here and some people did a while Facebook page on a "cross PA adventure trail" with a few different gpx files you can download.
You are the only English speaking person who does any of this stuff on UA-cam. Thanks again. I’m about to order their lowering set of shock and fork springs if I can find a solution for the kick stand. As dropping an inch or more is gonna make that a major issue.
KTM power parts has a lowering kit. It had a shorter shock and kick stand. Thanks for the feedback.
@@advmatt it’s been out of stock for almost two years sadly. I would pay double for one if they existed. But sadly who knows when that’s gonna happen
@@SticksAandstonesBozo well that's no good. Find someone who can weld. Have them cut off the bottom inch or so of you kick stand and weld a new big foot to it. I would check and see just how upright your bike is after lowering it with the kick stand down.
@@advmatt yeah that’s my plan. I can weld I just am busy and doing so many other things. But if I have to cut it and add a new foot and powder coat it I will just a lot of work for a kick stand lol
outstanding Matt! You're doing all the experimenting and product testing for us. I ride very much as you do. I use paved roads to just get off-road and spend my time in Colorado, and Utah. Please give us an update when you feel you've ridden all the trails you normally would and have a good feel for your "new" ride. Thanks!
Will do, this fall I should get some good testing in.
Neat fork tube holder
I have used it many times just for this.
Thanks for the install. Video. I ordered them when you mentioned them in Instagram. Arrived in a week. You can now rider them from the UK websitem
Everything went fairly well for me except I can’t get the rebound clicker to engage and stop spinning clockwise. It worked before I took it apart. The damper rod doesn’t seem to be floating in the cartridge at all. I had a spacer at the bottom of my old spring too. I felt like that should go up top but left it on the bottom since that’s where is started.
That doesn't sound right. Something appears to have disengaged on the adjustment. The position of the spacers may also effect oil volume but should work fine.
love this video, highly useful.
I am about to upgrade my 390 adventure's suspension, just wonder if this hyperpro spring can increase the length of the suspension? I think the original length(170mm) is a little bit short.
The length can't be changed by changing the springs. The preload will dramatically change causing the bike to sit higher in its travel.
Appreciate it, thx bro：）
Great video! Love your bicycle stand set up for the fork tubes. Did you buy the O-rings to measure the preload travel or did they come with the bike?
The o-rings came on the forks. Thanks.
Thank you for this video. I have a question, the hyperpro progressive springs from a spanish distributor, come in a kit with a SAE 15 fork oil. Did you change visqosity due to your upgrade, or did you stick with the ktm`s recomandation of SAE4?
I did not change the fork oil. I did not enough miles onbthebforks to change it and it looked clean. The forks have worked fine.
Thanks once again for the great content! Seriously underrated channel! Hope you grow fast Matt. Took the liberty of sharing your video in the KTM 390 Adventure Forum (Facebook)
I need to join that forum, thanks for sharing the video.
Thx for the video! Very informative. A must for 390 Adventure owners who want to be less dependent on dealers.
As a EU-Spec 390 Adventure owner myself, I wonder if you will do a fork seal & dust cover replacement video in the future.
That will be phenomenal for 390 adventure owners worldwide.
Once again, thank you very much for making those awesome videos!!
Once the seals start leaking I will do a video on it. Hopefully it's a long time away.
My left fork seal started leaking and the "seal saver" cleaned it out enough to stop the leaking.
I hope to avoid replacing the seals for a while.
14:42…Thought I’d hit the wrong website. 😂
I weigh about 250 with gear on . Should I increase the thickness of the fork oil , if so how much do you recon ? Thank you for your videos as they are very helpful
You could, but I weigh about 230 with my gear and ride mostly fully loaded for camping and still have plenty of adjustment on the forks. The recommended fork oil weight is 5w, you could go to 7.5w but I wouldn't go any heavier.
hello, thank you for this video 👍 Following that I also installed the hyperpro springs but strangely I found that I lost comfort, the bike is now very firm on small shocks. did you feel that too? Thanks 👍 I am considering removing the second 10mm ring, what do you think?
It depends on what you weigh and where your compression is set, right fork adjustment. I weigh 210 pounds. I run the compression at the mid point, where before I nearly had set it to the firmest setting. My opinion is, if you weigh less than 175 lbs you might want to remove the spacer and use the compression adjustment to dial in the feeling you want. If your bike doesnt have suspension adjustment you might want to remove the spacer as well.
@@advmatt well I weigh exactly 175lb. I will try without the spacer. Thanks for your answer 👍👍
Hi Sir，I bought a pair spring and prepare to install by myself too.
May I ask how big is that wrench? and how thin it gonna be to fit into that nut? Thank you so much!
I don't exactly remember the size. I think it was 18mm. I used an adjustable wrench, but a thin set if metric wrenches would have been better. Getting to the nut is the hardest part of the job.
How are the springs working out now that you have put some miles on them? Notable difference to the stock feel? Moderate difference? Did you 'need' to take out that spacer? Would it have added some height to the front of the bike, or perhaps a touch of ground clearance? (though the rear should be mated to it of course if the height did change) It is the ease at which these bottom out in a quick up and down rut situation that needs addressing for me, even with the compression set all the way up it still hits. Otherwise stock is not horrible for a budget bike, quite impressive. Everything could be better I suppose, my 890R was great stock, but I still had suspension work done, both front and rear, and of course it is even better.
Either way, its going into the suspension shop for them to have a look and see what they recommend. I will let them know your feedback on this upgrade so we have a point of reference. Thanks Matt, keep up the good work.
There are a lot if questions here so let me see if I can answer all your questions. The new springs made a huge difference. The bike now sits at a proper sag, around 30%, not 45%. I had to remove one spacer because the new spring is longer. Keeping that spacer would be too much preload and your sag would not be enough. I have only bottomed the fork one since changing springs. I run the compression damping at 15 clicks or the mid point and the rebound is around 10 clicks from open. The bike tracks so much better now. The ground clearance is improved because of proper sag. I didnt change the rear spring because I plan to upgrade the rear shock, but if you keep the shock replace the spring. All bikes need a suspension tune to fit riders weight and riding styles. Factory bikes are very generic. Thanks for watching.
Any particular oil used for better performance? Also what is the weight of the springs Vis a is Stock?
I didn't change the oil when I changed the springs. I think using the oil Hyperpro provides with the spring kit is a good oil. When choosing an oil you want to also consider how you want the fork to perform. If you are heavier you might want a heavier weight oil, if you are lighter you might want a lighter weight oil. As for the spring rate, Hyperpro does not list the rate. The progressive springs have a variable rate based on compression. I think the initial spring rate is slightly higher than the stock springs and then the rate increases from there. I don't know the fully compressed spring rate. Cheers.
Hi Matt,
What is your current setting on the front shocks (compression and rebound)with the hyper Pro springs?
Compression leg, left side, is set around 14 clicks from fully open. Rebound is set around 10 clicks from fully open. The settings will be dependent on your weight and how you ride. Cheers.
I am doing this mod today. Just wondering what your final opinion is on how many spacers to take out and leave in? Also, how many clicks on compression and rebound did you end up doing?
I left all the spacers in if I remember correctly, without rewatching this video. I left them in due to my weight of over 200lbs. If you weigh less you might be able to drop one of the spacers. My compression setting is about a third of the way open and my rebound is around the mid point. I don't remember the exact settings but those are good starting points.
good video
Are the HyperPro springs one size fits all or do they ask your weight and bike cargo loading weight?
The fork springs are one size fits all, for the shock it's supposed to be weight matched but I don't think that is actually the case, I think the weight adjustment is for damping and preload from shop.
Is there any problems keeping the rear spring linear? I didn't find a progressive spring for the rear suspension of the versys x 300, only front springs.
The handling of the rear end will not work as well. I have found the rear end tends to blow through its travel much more frequently due to the inbalance of the suspension. I try to ride the bike within its limits and it is manageable.
Bro i own a Gen1 Rc 390. Im experiencing front Dive-in while braking since 6 months.
What are the possible solutions ??
New stiffer fork springs.
Does Hyper-pro offer a linear spring or cartridge kit for the 390 ADV? Did you contact them directly? I just had my sag checked and the tech couldn't do anything with the front end and replacing the front spring was the only suggestion they had. They are struggling to find any spring options so I thought I would ask you... Thanks in advance.
There isn't a cartridge option for this fork. I dont know about a linear fork but the progressive does a really good job. Hyperpro seems to he the only company offering a fork spring for this bike.
@@advmatt I will keep you updated. I am intrigued by HyperPro since they are NH based and I live in the Granite State. I will contact them Monday and hope to gain some knowledge. The lack of options combined with wait time is very frustrating for just about everyone right now so I appreciate the reply and wish you the best riding possible.
My only hesitation with this bike is the ground clearance, it’s such a perfect bike other wise power and looks.. how do you find it off road I’m wanting to do some serious off-roading (I’ve got spiked wheels I can put on this bike)
The ground clearance can be a bit limiting but with this bike I can pick my lines and slowly pick my way through jeep trails. As an adventure bike it is fantastic, but it is not an Enduro bike. I have ridden way more rugged terrain on this than my R1200GS, and I pushed that bike. Ride it within its limitations and it is great.
Great video Matt! How much do you weigh?
Lately more than I want. Without gear 212.
@@advmatt Good info- Thanks Matt!
I am considering changing the springs on my bike. Would you advise doing front and rear at the same time? Also what is your mass including riding gear?
It's best to both front and rear at the same time but I didnt because I plan to install an aftermarket shock. My weight with riding gear is probably around 235 or so pounds.
@@advmatt Thank you very much for the reply! I am very happy with the bike and am in the process of modifying it to better fit me. In terms of weight I am a bit lighter, but not much. The springs should work. Now I have to decide if I want a purple or a black spring for the shock...
I’m either gonna replace my fork seals, or do this. I can’t get them to stop leaking. Any advice?
If your fork seals are leaking you should replace them. At some point the seals cant be saved. While the fork is disassembled replace the springs and oil.
@@advmatt I guess the question is would it be worth it to do this upgrade since as you said the seals need to be replaced. I don’t ride off-road nearly as much as you, just some dusty dirt roads in the mountains. Nothing crazy.
@@CPT_IDPS the springs will help on road performance too. Especially under braking loads.
iv said it before and ill say it more lol but thank you very much sir!
Hey matt. Wondering what fork oil grade you are using?
5wt. I have been really pleased with the forks after this upgrade.
@@advmatt Are you using the factory oil or changed to some other brand?
@@pranay4915 factory right now. I plan to change the oil and go to Motorex. I might be wrong on the fork weight, it might be lighter, but I plan to use 5wt.
@@advmatt Great. Overtime I've noticed too much dive on front. I am past 22k kms so planning for a 7.5W grade oil.
@@pranay4915 I have adjustable forks so I was able to add compression. The heavier oil will help.
Hi I weigh about 250 pounds i would like to do that upgrade where I can get the springs ?
My best advice is to go to the Hyperpro website. You can find dealers from their website and in some cases order directly.
Do you have the part number? Also, did your kit come with the oil?
Part number is SP-KT03-SSA008. This does include the oil.
so if i weight between 170 to 175 pounds, the stock spring its ok?
Shock spring, yes, I am not sure what to tell about the fork springs. I think the fork springs are too soft stock. The bike sags 40% on it's own weight before sitting on it. You could install a progressive spring and keep the compression damping very open. It will make a noticable difference.
@@advmatt thanks! suscribed!
Where did you get them
I purchased them from EPM Performance in the United States. You can also go to Hyper Pro's website. Depending on where you are you can order from their website.
so I’m curious, did you end up staying with the two spacers (one long, one 10mm IIRC)? Would really love to find adjustable preload APEX caps…
FWIW, the KTM part number for the 45 MM (oddly shaped) fork cap tool is T14091 (like 25$ from my local dealer)
I removed one spacer and kept the other. If I remember correctly I kept the 10mm. The second spacer on one leg consisted of a several smaller ones. I did not want to reinstall those. I need to look into getting that fork tool. Thanks.
I just wanted to let you know that, even though it's been a couple of years since you created that video, people are still using it as a guide to help update their own 390s. I must say, however, that your 21-minute video took me hours to complete. I had a particularly hard time compressing the spring when putting it back together, around minute 12:22 in your video. Despite the challenge, I really appreciate your effort in creating the video, and I hope you keep the content coming.
ua-cam.com/video/7gCt_6RVzGY/v-deo.htmlsi=tX6dZ2lBaN0P1ZJt&t=742
Thanks for the feedback. Compressing the spring was super challenging. I am glad this has been so helpful.