525 Motorcycle Rear Sprocket For Yamaha TRX850 96-00 TDM900 02-13 FZ8N FZ8S FZ8 NA SA 10-15 39T-49T Fit For Yamaha TRX850 1996 1997 1998 1999 2000 TDM900 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 FZ8N FZ8S FZ8 NA SA 2010 2011 2012 2013 2014 2015 motorcycles compatible with 525 drive chain available in 39T to 49T tooth range drilled mounting holes match rear hub bolt layout enables direct installation without or tooth count options tune torque acceleration smooth machined teeth minimize chain skip running vibration density carbon with full treatment hardened tooth surfaces reduce abrasion during long distance riding calibrated overall dimension uniform plate thickness maintain balanced rotation for steady power output