Complete Razor MX650 Upgrade Guide. 28mph! (Controller, 48v Battery, 1800w Motor)
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- Опубліковано 16 січ 2025
- In this video I detail how to upgrade a Razor MX650 with a new controller, 1800 watt motor, and 48v Lithium Ion battery. This is a step by step guide showing all parts of the build.
Battery
www.ebay.com/i...
Motor/Controller
www.ebay.com/i...
Throttle
www.amazon.com...
Junction Box
www.amazon.com...
Velcro Straps
www.amazon.com...
Quick Disconnect for battery
www.amazon.com...
Contact Info
MaryleyJaxGarage@gmail.com
I can't begin to thank you enough for this video. There are a ton of great MX650 modification videos out there that have plenty of detail in them that inspired me to get a 650 in the first place, but this is the first one that actual shows all the steps that other videos do off screen and then just tell you how to do. The fact that you actually showed how to recess the screws in the motor other than just saying you can do that, has been something I have been searching for and dreading to go in relatively blindly. That part is an absolute necessity that someone trying to become handy, like myself, needs to feel comfortable with potentially ruining their Razor lol. Thanks again for the guide and confidence boost. I can finally put the motor I have sitting around in my MX650 with some comfort.
Thanks for taking the time to comment man, it’s people like you that inspire me to keep putting out videos. Let me know if you have any trouble putting that motor in the bike. They are a ton of fun once they go twice as fast.
Best upgrade video on the net! Thanks!
All facts
Dude! This is one of the most thorough vids on UA-cam for these types of Razor mods! Great job!
Helped me tremendously!!
I appreciate that. It is so much fun to ride. Check out my upgrade videos to make it even better.
@@MarleyJaxGarage I definitely will. Already saved them to watch later. I have an MX650 and a PR200 for my kids and plan to get a couple more as projects.
Keep up the great content!
BEST MOST COMPLETE AND LOGICAL 650MX UPGRADE I HAVE EVER SAW, I UPGRADED ONE LONG BEFORE ANY VIDEOS WERE OUT, YOU HAD THE SAME ISSUES AS I DID WITH THE SAME PROCEDURES AND THOUGHT PATTERN, SUPER JOB. I WOULD HIRE YOU.
Thanks man I appreciate the comment.
OMG provides links that are used in video and THEY ARE NOT ALL SOLD OUT THANK YOU SOOO MUCH.
No problem, thanks for watching!
Were the links to the parts ever posted?
Great video, man! I agree, lots of partial how-to videos. This is the first top-to bottom, stock to modded video i've seen. Been looking into doing something like this for a while now, thanks for the instruction!
Thanks man, that is great feedback. You should definitely build one of these and let me know if you have any questions. Comments like these keep me motivated to put out more videos.
Very well done, thanks for sharing this and responding to everyone. Very informative. Doing a build right now for my son.
Good luck and thanks for watching
This is what gets people popular man I've built my first one with this video and sold it and I built a 2nd one with a lil help of this video and a 3rd one which no help outher than that damn side panel lol the on off swich but with the help of the video I got it apriciate it champ
Thanks man I remember you commenting a couple months back. Glad you got everything figured out and can build these now. People sell these for big money around me.
As a guy who learns best by watching once and jumping right in, your videos are perfect! I'm out here tearing into my first of two mx650s. This is all I needed to see! 🤌
Thank you for all the MX650 upgrade videos! I just got it along with all the upgrades parts (1800w motor, bigger spring, lights,..) and planning to do it soon thank to you again 😀.
Also got 2 mx350 for my kids and planning to used the 650w motor for the mx350.
If anyone here in LA area, please let me know if you willing to sell your original motor set: 650w motor, controller and throttle (need cheap extra set)
I will
Doing this build now!Appreciate the video it helped out!Already pre-assembled my motor and connection then all I have to do is connect the battery when it arrives tomorrow!
Thanks for the comment. They are a lot of fun. It will be twice as fast once your done.
@@MarleyJaxGarage For sure I got it all hooked it up and it works...Just one question though I do not have a 3 speed and i have it jumped.I saw you said put it in the middle then high speed wire and i tried the left and right side.Would ether one of those sides be the high speed or will you also have to remove the middle also and just left and right only?Reason being i did test on both amd max speed i got was 22mph on flat.Thanks for the reply!
I would just take a piece of wire and strip the ends and poke them in the connector to test it. It should stay in place itself, but the best way is to put one end in the middle pin; get someone to lift the motor wheel and give it full throttle, while you touch the other end of the wire to the high-speed pin, so that you can see/hear the difference.
Did you change out the sprocket as well because that will change the top speed.
@@MarleyJaxGarage gotcha that’s exactly what I did.So you’re saying one end has to stay in the middle correct on the 3 speed.Then the other end in ether or (which ever is fastest) correct?
That thing rips! Nice job!
Thanks for watching!
Great video and detail. Best video I have come across for modding the razor sx500. I’m buying all the parts to mod it rn. Thanks for the great tutorial I really appreciate it!!
Appreciate the comment and thanks for watching.
Thank you. Followed this +/- some wire connectors. Thanks man!
33mph per my government supplied speed checkers. 175lb rider. Building one for my son next.thanks man!
Got a free MX650 from a neighbor it need full rebuild, about to order a kunray 48v 45A kit with motor 3 speed keyed volt meter throttle, gonna look for that same branded battery
Never heard of that kit before. Let me know how it turns out and good luck on the build!
Awesome video! I picked up the same kit for my MX650 and once throttle and wiring was hooked up, i realized I couldnt turn it on by switch or key. Might need to watch the e-lock and on/off switch again, but think I might have found my solution. Ty!
They must wire up those switches different now in the throttle. Followed your instructions to the t but decided to go ahead and hard wire speed switch and volt meter on the throttle. I have 1 as medium 2 as fast and 3 as slow. It's all good though. It works and that's all that matters. I don't have a piece of wood to mount the controller on. I noticed if you place the heat sink inside the right hand side of the box that it fits nice and tight. Just wondering what i should do to mount it. Thinking about some sticky velcro, or drilling into the side of it and mounting it directly on to the case
Great Video! How did you connect the wires on the side panel from the On/Off switch to the controller and battery? Currently stumped on this part.
Thanks bro like how the battery first without hackong the frame.
Thanks man for the step-by-step real big help
what do you mean by u cut the connector do u mean that u just snipped the wire and forged the wires to another connector
Cut the wire, strip the end and put on a new connector that I could use.
Can you put the pin on where you can get all the batteries in the
Great video ,straight forward.where can I buy the e-lock switch
Any two pin round rocker switch will work. I don’t remember exactly but I think it was this one a.co/d/cT9L0Cn
one option instead of modifying the motor screws is just use a hacksaw and cut the heads off the screws so they are flush with the motor. however only do it if you sure you will never ever need to remove those screws
easy out will do it
Do you think you can make a video on the side Panel and show how to do the wiring bc when I was watching the video whatever you used to wire it up it wasn’t on the link for the parts and wires. So if you can can you make a vid on showing what you need for the side panel and the wires you need for it and how to do it that would be great.
The wires on the side panel are what comes on the bike stock. The only other wires were the ones for the e lock which are just standard 18 gauge wire.
Ok thank you for the fast reply is their a certain one I can order
@@adamomidvar4519 Lowes/Home Depot or pretty much any home improvement or auto parts store will have the wire in there electrical section. They will also sell all the connectors needed as well. I don’t remember where I got that particular wire from.
@@MarleyJaxGarage oh ok thanks so much for you help I got one more question can I get your phone number to ask you one more question?
@@MarleyJaxGarage hey quick question where can I get the fuse connecter that you have on the side panel?
Could I get a link for that E-lock
I think it was this one www.homedepot.com/p/Gardner-Bender-16-Amp-LED-Illuminated-Round-Hole-Rocker-Switch-GSW-50/205971618
Great.video.u explain all.in detail.awesome job
Thanks for watching and I appreciate the comment.
ive been trying to upgrade my bike but have little to 0 of the tools i need. I feel so defeated not bieng able to find a detailed but easy tutorial that works for me.
I would see if you can borrow some tools. There are many people out there willing to lend a hand and this project just needs basic tools. I am always helping out neighbors so don’t be afraid to ask around. Start small and buy when you can afford and need the tools, that’s how I got all my stuff. I buy used from marketplace and yardsales.
I appreciate your video contribution. Thank you 🙏🏾 for sharing, definitely helps me learn how to improve my 650
You’re amazing bro.. thank you!
So simple but yet so detailed
Thank you!
When drilling the motor for the counter sink, did you leave the two spacers that were on the screw?
Hello I just wanted to say thank you so much for the upgrade tutorial. I’m good on everything but I’m just a bit confused on connecting the battery and controller to the original plastic where you would charge the bike from stock?
what else do we need to buy other than the parts you listd in desc
I listed everything I could think of so if it’s not there it’s probably small items like wire connectors and shrink wrap.
great video ! defiantly helpful thanks for all the links to parts!
Thanks for watching
Great video but at the very end you even noted the missing TOP SPEED !!! thats what we all need lol
Top speed is in title 28 mph
Do you have a 72v 3000w video? Interested for myself been thinking of trying it
What size circular ring connectors will fit the junction box
Great tutorial I finished up my bike tonight. I got the exact same battery you got what voltage were you letting it go down to?
Ok I have the exact setup and wonder - when you cut and spliced the brake wires on the controller to put the original controller connectors on, which wire did you put to red and which to black?
Awesome! I'm trying to do the same thing with my daughter's 650.. do you have a list of everything that you bought to complete the upgrade. This is one of the best tourtorials I've seen. Great job!
Thanks man. I listed all the parts and links in the description. Let me know if you need anymore help.
@@MarleyJaxGarage thank you so much.. foreal when I say awesome video you did a outstanding job.. subscribing to your channel now.
Can you put a link so you can get the so I can get the battery the motor and the setup for the upgrade the bike
Where did you get the connecting wire thing with the screws ???
i followed along for the whole video minus using your 3 speed throttle. i’m totally stumped. Everything seems to be reading voltage. but when i turn of battery and twist throttle i get NOTHING. been trying to figure out for a couple days now. Hope someone can give me some insight
Read through the comments, a lot of people had been wiring up the 3 speed differently but that it most likely your issue. The only other common problem is an issue with the brake controllers but you could unplug to test that
@@MarleyJaxGarage okay thanks . whats that 2 ring terminal connector that you used that wasn’t listed in description?
Same problem. Did you find a solution?
no. i spent hours trying to figure out, but it’s best for me to take it to ebike repair or specialist in area.
Don't see .motor in parts list?
can you tell me the name of the all the connectors you used or send me a link for them please
I just bought a big kit on Amazon like this one a.co/d/1K6OKtY
Great video bro. Very detailed from beginning to the end… Only question is what is the run time and battery life like with your set up ?
I get about 90 minutes of mixed riding with this setup. The weight of the rider and the terrain make a big difference in battery life. I am about 200 pounds for reference.
I've been trying to find the right sprocket please send me the link for it
Great, video.
Does it wheelie at all with 1800 watts?
Good Video alot of info, I have question, If my battery has its own switch (Ebike battery) can i make a different switch? I want to put my covers back on but need way to turn off and on... (I do have a key also but battery still is on)
do you have to hook up the brake sensors? say i cut the brake sensors of so they just go straight the the brake and not with wires?
You don’t have to hook up the brakes for it to work.
the 30amp fuse wire that comes separate on Amazon correct
How was the torque compared to the stock motor .I ride in the woods on mine with small hills . The stock motor with 48 over volt don’t like to pull the small hills that great.
It has way more torque than stock, not really even a comparison. It does pretty good on hills with people 200lbs and lower. It will kill the battery faster but the new motor is 1800 watts vs stock 650 watts
@@MarleyJaxGarage thanks for the info I’m 160 just order a 48 volt 2000 watt hope that will do it for me . Thanks for the video on it.
Did you notice any issues with your battery rated only upto 1500w but your motor supposedly drawing 1800w?
Same question. Thanks
is everything in the description links are what I need? Will I need anything else or will i need other wires, etc?
Did this need any soldering?
Hey I know this was 2 years ago but will a 2000w motor work too?
Im having the same problem as many here. I went with the exact items liated in the description. Everything wired the same but used throttle that came In the kit rather than the 3 speed. Wired the two elock wires together. Tried every combo of 3 speed wires together. Power is going from the battery to the controller but No response when throttle is turned.....😢 I'm lost. Not sure If I recieved a bad controller or motor?
I recommend using a 3 speed throttle since it is a 3 speed controller. I never used the throttle and it seems more people have trouble with them. Haven’t seen any comments about issues with the throttle in the description.
Hey did you fix the no throttle issue? I'm having the same problem
No Milwaukee saw ?
Haha I wish. I don’t think I have any Milwaukee tools yet.
Been a while how’s the battery holding?
can you do this with just the motor and controller and no battery?
Nice set up, so from my understanding you wired it so you can use stock charger with stock port or the battery charger it came with?
No I set it up to charge with the port that comes with the battery.
idk if u will reply but can u make a new video more in depth on the battery?
Can you do the mx500 too
The MX500 would be the same process as this video. All of the wiring and motor stuff is identical. The only difference is that the battery box is bigger so you might be able to set the controller a little better. If I come across a cheap one I will upgrade it.
do you 100% need everything in the description or can i not but the extra throttle and just use the throttle that comes with the motor and controller?
No you can just wire 2 of the 3 speed wires together just need to figure out which one makes it run the fastest.
Excellent video!
Thanks
Can I use the motor alone with my own speed control knob and plug it in? Will it work? I don’t need those other parts. I’m using it for a different project.
Does the fuse box come with the bike originally or did you have to buy it separately
why did you need to counter sink the screw holes? just wondering as im waiting on the bike to get here to throw my 80v battery/3000w motor on it lol
They were hitting the rear swing arm and would not mount up correctly without counter sinking them.
@@MarleyJaxGarage thanks!
Can you send a link to all of the connectors that you used? I know you said bullet connectors but I didn’t catch the names of the other ones?
I just got a big set of connectors on Amazon. The 2 pin connectors I used are linked in the description.
@@MarleyJaxGarage Thank you for the response.. much appreciated! Thank you for taking the time to make these videos!
Bro where do you get these things I can’t see anywhere here in Australia that sells them for under 2 thousand dollars
Really? That’s crazy expensive. They go for brand new on Amazon for $650 in the States. I find pretty much all of my projects on FB Marketplace. These come up all the time with dead batteries for pretty cheap.
@@MarleyJaxGarage really? What is the go with the batteries are the rubbish? Are they expensive to replace? What do you think it would cost to ship something like that to Australia? Honestly mate if you started an amazon page selling them to Australia I think you would sell a few.. I for one would buy 2 immediately
I'm confused with what you did with old powerport. What is the elock your referring to? Did you remove the stock power port. I did and I plan on keeping stock on/off switch. I planed to use the old power port hole to put new port that is attached to battery. I don't have use for that stock port and don't want to drill any unnecessary holes. Just trying to figure out what the elock is that your referring to. Sorry I'm new to all this and have the same set up you have.
I used the stock on off switch to control the main power between the battery and the motor. The e-lock is used as a key or switch when there is power to the controller. If you do not want to wire it up simply connect the two e-lock wires together. I used the old charging port for the e-lock and then drilled a hole lower down where the charging port for the battery could stick through.
@@MarleyJaxGarage how is it still running has it been good to you. Have you had to change motor or still running strong.
What battery’s is that and how much range do u get
Is there enough torque to do wheelies?
Definitely depending on the suspension setup and rider weight.
What is the AWG of that adapter that you used for the battery
Great video. Thanks!
Can you recommend a good 36v 20ah Li-ion battery?
Thank you. I have not bought any 36v batteries only 48v. My battery has been good so you can probably go on eBay and get one from the same manufacturer. Link is in the description.
Thank you! Do you leave the battery charging overnight or it's not safe?
@@ddpmusic I try not to do that but I have left it charging overnight a few times without any issues.
what wire did use to connect the power button. the long lead blue wire. i need that
how long does the battery last ?
Mileage ?
Nice video but any body know if you have to change the throttle???😢
You don't have to change the throttle, only if you want to make it a 3 speed.
It says the battery is only for up to 1500w and the motor is 1800. Will that cause issues? Will it cause issues with a 2000w motor?
If I just upgrade the motor and battery would I still need the junction box and controller?
You don’t need the junction box it just makes the connections easier. Most of the eBay motors already come with controllers so you wouldn’t be saving much money.
do you only need one battery
I need help i jus got w 48v and 1000w electric dirt bike and idk how to take the stuff out of it like the motor and
Thanks for the video
Thanks for watching!
Can you do this but keep the stock motor? or will the extra voltage fry the motor
I have heard of people just over-volting the controller and motor but I have never tried it. My guess is that it might be a little bit faster but not much. I don’t think it will fry the motor.
How did you do the electric start I can’t do it
Do you think the battery is safe enough thought
What modifications did you do to the battery cover plastics To make them fit?
I just cut the top out of them pretty much. The way the battery sat it needed some clearance.
What are those connectors called? The black and red ones?
Those are quick disconnects and are linked in my description.
can you still charge it?
Do I need a three speed throttle? I bought all the stuff and realized I missed the throttle so just wondering if I can still make the build, or need to buy the throttle
The only thing I'm missing is where does the charge port go in the white connector and says charge port where do I Hook the charge port too.
Do you know how fast it will go
Thank you for the great video. My MX650 has been sitting in our garage for over a year with a dead battery. I am excited to upgrade it using your video. I do have a quick question though. I am looking to add a little more power and was looking at a 48V, 40amp Battery and a 2000W 48V 42amp motor kit. Would these work together? I am not that savvy on batteries and motors. I believe the battery Amp needs to match the controller correct?
I would post a link to the battery and motor, but I don't think I am allowed to in the comments.
Yea I think so as long as the battery has a max continuous discharge current of 40 amps.
How long does the battery last?
Quick question: The link to the battery you purchased on eBay says it’s BMS will go to 1200W. I presume that your controller is going to 1800 W? Should I buy a battery that’s rated for higher wattage output than 1200w?
I chose it based on amps and amp hours. The controller I linked is only rated for 32A and the battery BMS is 30A. I probably could have got something different/more powerful but I knew this one would work.
@@MarleyJaxGarageis it fine if I get a 2000w moter?
Awesome work
Can you just write the on/off switch directly to the e-lock port and nothing else?
When I had everything set up I plugged in the last two cables to the battery and the on switch and I heard a pop and then nothing worked I turned on and off switch and nothing
Sounds like you might have wired something up backwards and blown the controller. Did you wire everything exactly as shown in the video? Is it the same motor controller setup I bought? Check and see if the inline fuse is blown.
If you switch it to the highest speed, are you still able to regulate your speed with the twist grip? What I mean is, can you hold it at part throttle and just cruise?
It just seems like your throttle starts very violently. I like the stock throttle feel because of how smoothly you can take off. I have read this to be a common complaint with these kits and the science-y people blame it on the actual controller, not the twist grip.
You can regulate your speed but it definitely has a jerky start. It works like you would expect it after you get going. After riding for a while I have learned how to control it better. I heard the same thing, with a better controller you can program more and get a smoother take off.
You can also use a bigger sprocket for less torque
Can I have the old parts please 🙏
what was total cost of all components?
If I have a 48 volt battery do I need a motor that has a certain amount of watts?
Watts = volts x amps. So yes you need to get the proper configurations.