My bike has one. I didn't install it and I've never worked on one. It is not fully disengaging anymore and I can't tell why.

I was expecting to see grooves in the clutch basket but it doesn't look like there are any. I am afraid to take this thing apart though .. looks like 300 bb's are ready to fall out if I do lol. I have no manual for the thing that I can find.

No personal experience but I did ride an 04' CRF250 with one and loved it. I call the company to ask about one for my CR250 and had a great conversation with them on the phone. Reason I haven't bought one yet is the cost. Call them up, I am sure they will help you out.

Cool, my bike is an 04. Former owner was Kristen up at Donnel's / Kearny cycle.

I read the instructions and it looks like there is quite a process I need to go through, but it basically says to start on the outside with the adjustments. Well, I already opened it up so now I gotta bolt the cover back on and refill it with oil. Then I get to bother the neighbors while I experiment with it out front. Fun..

As I feared, it simply says to lay the bike on its side so you don't lose any of the 40 bb's... looks like disassembling it is quite an endeavor.

Wow, sounds like tearing into the main shaft of a Munsie Rock Crusher.....Good luck Mark!