Hi, I'm new to the forum.

I recently picked up a 2018 KLX250 and would like to drop a tooth on the front sprocket ( from 14T sstock to 13T), but I don't want to change the chain as it is brand new. Does anyone know if you can replace the counter shaft sprocket without separating the links on the chain? Thanks.

 

You shouldn't have to remove the master link. Slide the rear axle all the way forward and that will give enough slack to remove and replace the chain. This http://www.sprocketstuff.com/Sprocke...cket_Tool.html will make the job much less frustrating best twenty dollar investment I've ever made.

 

That's an awesome tool, I never knew that existed. Seriously OP, consider it because removing the countershaft sprocket is a bitch. Do a search you'll find a few threads on it.

 

It's not insurmountable, many have removed the nut at home using simple tools you have at home. There might be a need if your new at wrenching...

 

I did this awhile back without removing the link; 14/42 to 13/42. Best $10, 10 minutes spent on the bike. Do it, report back.

 

Yeah I've always been pretty successful getting counter sprocket nuts loose but my son's 2006 was a real bugger. We tried 4 foot cheater pipe, air wrench, heat, and lots of liberal dousing's of break free. It wouldn't budge. Found a youtube on the sprocket stuff tool and decided a twenty dollar investment would not break the bank. Ordered one and the nut came off first try. Still had to use a cheater pipe with the breaker bar but it did come off with little less effort.

 

Loosen the nut with the chain still on, with the rear brake engaged. No tool needed.

 

That's what I've usually done. Didn't work this time.

 

Yeah my clutch must have been slipping I had to put a 2x4 inbetween the spokes and my floor Jack handle as a cheater �� Ehhhh it worked