Piston Kit 71.45/+0.50 8.7:1 Yam

Will not accept OEM rings and rings will not work on OEM piston

Fitment:
Yamaha YFB250 Timberwolf 2WD [SRA] 1992
Yamaha YFB250 Timberwolf 2WD [SRA] 1993
Yamaha YFB250 Timberwolf 2WD [SRA] 1994
Yamaha YFB250 Timberwolf 2WD [SRA] 1995
Yamaha YFB250 Timberwolf 2WD [SRA] 1996
Yamaha YFB250 Timberwolf 2WD [SRA] 1997
Yamaha YFB250 Timberwolf 2WD [SRA] 1998
Yamaha YFB250FW Timberwolf 4WD [SRA] 1994
Yamaha YFB250FW Timberwolf 4WD [SRA] 1995
Yamaha YFB250FW Timberwolf 4WD [SRA] 1996
Yamaha YFB250FW Timberwolf 4WD [SRA] 1997
Yamaha YFB250FW Timberwolf 4WD [SRA] 1998
Yamaha YFB250FW Timberwolf 4WD [SRA] 1999
Yamaha YFB250FW Timberwolf 4WD [SRA] 2000
Yamaha YFM250B Big Bear [SRA] 2007
Yamaha YFM250B Big Bear [SRA] 2008
Yamaha YFM250B Big Bear [SRA] 2009
Yamaha YFM250B Bruin 2WD [SRA] 2005
Yamaha YFM250B Bruin 2WD [SRA] 2006
Yamaha YFM250X Bear Tracker 2WD [SRA] 1999
Yamaha YFM250X Bear Tracker 2WD [SRA] 2000
Yamaha YFM250X Bear Tracker 2WD [SRA] 2001
Yamaha YFM250X Bear Tracker 2WD [SRA] 2002
Yamaha YFM250X Bear Tracker 2WD [SRA] 2003
Yamaha YFM250X Bear Tracker 2WD [SRA] 2004