HOW TO: 2 Stroke Top End Rebuild - KTM 125SX

Hey guys check out this video if you want to know how to rebuild top end on 2 stroke dirt bike. We are working on two stroke KTM 125SX - rebuilding a top end using Wiseco Garage Buddy rebuild kit.
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how to rebuild 2 stroke top end KTM 125sx dirt bike

[@gearedupkim9516]

Thanks for this video👍 Really helps a newbie like me, who really wants to learn how to do my own ‘00 CR250R top ends myself.

[@dirtniron]

Glad to help

[@giacomopanizzolo]

For my engine rebuild video I used Wossner piston and Conrod. Have you ever made a comparation with wiseco parts?

[@jackkuchera2612]

I love wiseco pistons but I switched to wossner because their pistons have a LOT more effort and machining put into them

[@schnecki_456]

Which oil are you using to install the parts?

[@kimgustafsson2]

I have KTM 125 sx 1998. It has been used quite hard. The engine starts up easy. But the clutch is worn out. And the gears have some issues. And behind the impeller it is a little yellow like the the bike has been driven without any glycol. I am thinking about rebuilding it. But are thinking about it can cost to much. My parents bought it 10 years ago. And hasn't been started since that time. And the piston hasen gotten stuck, which is good. I love Ktm bikes.

[@jeanlawson9133]

Never go wrong with Weisco parts.😎

[@michaelsteward3562]

Why's that you say never go disco piston ? Scratching my head

[@chrislewis3083]

What size piston you used 53.95

[@hasanapachi9111]

Is a 2-stroke or 4-stroke cylinder more powerful? In terms of the line falling on the wall or the cylinder block and endurance in the heat? Which one is better؟؟

[@ChrisBikeLife]

2

[@bobmths]

Hey guys I’m gonna do the same rebuild on my son’s bike . Can I ask a few questions please ? What brand of lube are you useing ? Also I noticed you are not coating the actual piston and ring with the lube ? May I please ask why ? Because I really do not know I’m no mechanic but will the piston be without oil when you actually start the bike up ? Would it be a smart idea to coat the piston with a small amount of motrex ? Please any info would greatly be appreciated thank you .

[@zacharydewitte384]

he did coat the piston and ring... i always use the engine oil for the bike no harm in making it lubed with correct oil

[@bobmths]

@@zacharydewitte384would that be the MOTREX 2 stroke oil we use to mix with the fuel ?

[@zacharydewitte384]

@@bobmths look it up don’t just go off anyone’s word but your well in the engine so I’d say fair game to say engine oil to your bike not mix for gas that’s a combustion mix for 2 strokes doesn’t have much to do with that but could be wrong

[@tannerempey2554]

FIRST BB

[@piloo8485]

*uses oil*, *freedom ahh american music*