Rebuilding a KTM 125 SX Engine Step-by-Step, Part 1: Bottom End & Clutch

After a used and abused '16 KTM 125 SX rolled through the doors of Allan Brown Motorsports, we worked with Allan on a complete Wiseco refresh of the tired 2-stroke engine utilizing a Garage Buddy complete engine rebuild kit, as well as a new Wiseco clutch. During it's previous final running hours, the engine hung a ring and left a nasty gouge in the cylinder. Thankfully, Allan enlisted the crew at ‪@MillennTechnologies‬ who were happy to take on the challenge, bringing the cylinder back to like-new condition. Follow along this first part of the engine rebuild as we reassemble the cases and get the complete bottom half of the engine together.

[@chevydread82]

Best 2 stroke rebuild video ever. It doesn't get any better than this.....

[@devineunlimited6800]

Good video, but didn't realizes it wasn't a current gen bike till you got to the clutch. Probably should list what year the bike is cheers

[@Idk56373]

Hey my crank has zero play but it spins nicely can I keep it like that?

[@jodylarue2312]

Did you put the crankshaft bearing in the wrong case side at 2:35? It seams fixed at 3:36 I didnt notice until I went to put transmission in.

[@olivierbruhaux7240]

Bravo grosse bub pour une marque, vous auriez pu faire le switch ???

[@cindylebail3011]

Vous mettez les spy avant de chauffer les carter🤔.
Et vous avez inversé les roulements vilo🤔🤔

[@kevincowley7111]

How many springs go in the gearbox fork shafts 3 or 4 ??

[@garretbellah8615]

Do you guys make a bottom end kit for 01 250sx?

[@jimio2900]

@5:22 hopefully in next video i can also see the installation from the top -side

[@Idk56373]

Hey my crank has zero play but it spins nicely can I keep it like that?

[@metehantan8892]

Hey bro, my bike husqvarna te 125 2014, change crankshaft bearing but my bike in NTN brand but im buying SKF brand, would it be a problem?

[@Idk56373]

Hey my crank has zero play but it spins nicely can I keep it like that?

[@johncampbell9091]

What year bike

[@georgeanderson4979]

The crank shaft bearing are the wrong way around!!!!!

[@jimio2900]

Your background music was slightly loud , i needed to rewind to hear what your explanation 😅

[@bretsimpson9890]

I thought ur vid was great everyone in comment’s are wingers. Always moaning about Suttin but I thought was mint wel done man. Also do you know WHARe I can get parts for a 91 sx125 message me

[@Idk56373]

Need help My crank doesn’t have any play (I needed to hammer in bearing but it spins good)