15% stiffer than original
Minimize clutch slip
Reduce plate wear
Improve power to ground

Fitment
2000 Yamaha YZ426F
1998 Yamaha WR400F
1999 Yamaha WR400F
2000 Yamaha WR400F
1998 Yamaha YZ400F
1999 Yamaha YZ400F
1987 Yamaha SRX250
2003 Yamaha YFM400FB Big Bear 4WD [SRA]
1993 Yamaha YFM400FA Kodiak 4WD [SRA]
1994 Yamaha YFM400FA Kodiak 4WD [SRA]
1995 Yamaha YFM400FA Kodiak 4WD [SRA]
1996 Yamaha YFM400FA Kodiak 4WD [SRA]
1997 Yamaha YFM400FA Kodiak 4WD [SRA]
1998 Yamaha YFM400FA Kodiak 4WD [SRA]
1999 Yamaha YFM400FA Kodiak 4WD [SRA]
1994 Yamaha YFM350FW Big Bear 4WD [SRA]
1995 Yamaha YFM350FW Big Bear 4WD [SRA]
1996 Yamaha YFM350FW Big Bear 4WD [SRA]
1997 Yamaha YFM350FW Big Bear 4WD [SRA]
1998 Yamaha YFM350FW Big Bear 4WD [SRA]
1996 Yamaha YFM350U Big Bear 2WD [SRA]
1997 Yamaha YFM350U Big Bear 2WD [SRA]
1998 Yamaha YFM350U Big Bear 2WD [SRA]
1999 Yamaha YFM350U Big Bear 2WD [SRA]
1995 Yamaha YFM350ER Moto-4
2000 Yamaha YZ250
2001 Yamaha YZ250
2001 Yamaha YZ250F