Will a 1994 125 gearbox fit a 2003 rm 125

http://www.bikebandit.com/2001-suzuki-rm250-rm250k1-transmission/o/m147723sch265201

Cant think of any reason why I wouldnt besides the motor mounts. Just go to your local bike shop and ask them. Good Luck!!

I'm pretty sure you want to use gear oil in the crankcase of a two-stroke,(like 80wt Bel Ray).
Standard "car weight" motor oils are 4 stroke, designed to lube the crank & cylinders. your '03 RM has the cylinders lubed by the pre-mix...
A motorcycle specific crankcase lube is the best bet; lots of differing opinions on the wet-clutch aspect.

hi,you arent going to like this ,but it is water from the cooling system getting into your transmission,rm bikes are famous for it,you will probably find that there is a seal on the back of the water pump (which is driven off the crank)has failed letting the water in to the gearbox,drain the gearbox,flush it before running it again,but get the faulty seal fixed first...hope this helps...cheers

yes mate either a seized piston or bearing are you mixng it correctly with a bottle and 2 stroke if not i recommend getting one quick also have you got gear box oil in the gearbox if not its a seized gearbox if you have both off these it will be the piston or crank strip it down and inspect the piston for wear broken rings bearing movement etc

You use normal engine oil in the engine(SAE 30).DO NOT use gearbox oil or clutch fluid as you will get problems with your clutch.

Please leave a fair comment if you feel I have helped you.

Thank you

open up the oil filler cap & see if oil is above the gears teeth & that should be ok

Okay, this may take a couple of comments back and forth but I can get you back on the road. First, Have you done any work on the clutch lately? If so, what and why? Did the clutch work okay after the work? Have you changed gearbox oil in the last month or so? If so, EXACTLY what oil did you put in the gearbox? i.e. "10w40 Mobil Super Blue fluid with silicone friction limiters". Just post a comment to get back to me.

Do a gearbox oil change. Then do another one 50 miles later. This should flush out the dirt and grit currently in the gearbox. You may want to invest in a new clutch cable also. 10w40 motor oil.

Hi you need to remove x member, engine cradle,propshaft etc to remove gearbox just in the middle of doing one myself.