Originally Posted by gary tompkins

Give PDQ a call - they are a dynojet stockist

http://pdq1.com/result.php?CatID=4430&MakeID=7

I'm also running 15/41 (M750) gearing - much better than stock ratio on 900. Got a spare 41T rear sprocket here if you fancy giving it a try, but yould need and extra few links on the chain if you do. Stock length chain would be too short.