2-stroke guys

[muddy400EX]

i just got an '03 rm 125 and it wont need a rebuild for awhile but when it does i wanna try doin it myself. im just wonderin what all i need for a top end rebuild and how much it will cost.thanks

[frosti108]

all you need is to order a piston. everything else will come with it like rings and ****... and im pretty sure a good piston like wiseco will be around 100 dollars. and you might as well get a higher compression piston since they cost just around as much as a regular one and increase performance... if you just go like 1:1 higher compression than stock, you shouldnt need higher octane gas than you can get at a gas station... hell i have an 11:1 compression piston and i dont need anything over 89 octane but i use sunoco 94 anyways :D this is just because they put a better mix of additives into the more expensive gas they sell (the higher the octane, the more expensive, and the better additives)

[frosti108]

o i forgot you should get new gaskets too! get a head gasket and a base gasket (or whatever u call that one lol)

[muddy400EX]

thanks frosti:D

[bradley300]

tool wise, the only thing you will need are a few metric sockets, gasket scraper and a pair of small snap wring pliers for the circlip. its so incredibly easy, you'll thnk your self for not paying someone else to do it.

[ZRider400]

Buy a piston kit that includes piston/rings/circlips. Then you will most likely have to buy the wrist pin bearing seperately. after that buy a topend gasket set. then you will need the cylinder bored.

after all that......put it together:p

[Florida400EX]

You don't need to have the cylinder bored, unless you lock up the piston, or if there are scratches. Just order a new piston kit, and top end gaskets, you can do it yourself it's easy. I had an RM125 also, I'm getting another one soon.

[buddy what not]

hey i have helped my friend rebuild his rm 125 and 250 just ask for a spares kit it come with every thing needed gaskets ring wrist pin piston all in one box it is like 120$ canadian