Kit includes crankshaft assembly, main bearings, and bottom-end gasket kit
Fit the models:
| YAMAHA |
YFM 350 |
2004 |
| YAMAHA |
YFM 350 R |
2005 |
| YAMAHA |
YFM 350 R |
2010 |
| YAMAHA |
YFM 350 R |
2008 |
| YAMAHA |
YFM 350 R |
2009 |
| YAMAHA |
YFM 350 R |
2006 |
| YAMAHA |
YFM 350 R |
2011 |
| YAMAHA |
YFM 350 R |
2012 |
| YAMAHA |
YFM 350 R |
2013 |
| YAMAHA |
YFM 350 R |
2007 |
| YAMAHA |
YFM 350 R SE |
2005 |
| YAMAHA |
YFM 350 R SE |
2007 |
| YAMAHA |
YFM 350 R SE |
2006 |
| YAMAHA |
YFM 350 R SE2 |
2007 |
| YAMAHA |
YFM 350 X |
1987 |
| YAMAHA |
YFM 350 X |
1988 |
| YAMAHA |
YFM 350 X |
1989 |
| YAMAHA |
YFM 350 X |
1990 |
| YAMAHA |
YFM 350 X |
1991 |
| YAMAHA |
YFM 350 X |
1994 |
| YAMAHA |
YFM 350 X |
1995 |
| YAMAHA |
YFM 350 X |
1993 |
| YAMAHA |
YFM 350 X |
1992 |
| YAMAHA |
YFM 350 X |
1996 |
| YAMAHA |
YFM 350 X |
1997 |
| YAMAHA |
YFM 350 X |
1998 |
| YAMAHA |
YFM 350 X |
1999 |
| YAMAHA |
YFM 350 X |
2001 |
| YAMAHA |
YFM 350 X |
2000 |
| YAMAHA |
YFM 350 X |
2004 |
| YAMAHA |
YFM 350 X |
2002 |
| YAMAHA |
YFM 350 X |
2003 |
| YAMAHA |
YFM 350 X MNH |
1997 |
| YAMAHA |
YFM 350 X MNH |
1993 |
| YAMAHA |
YFM 350 X MNH |
1994 |
| YAMAHA |
YFM 350 X MNH |
1995 |
| YAMAHA |
YFM 350 X MNH |
1996 |
| YAMAHA |
YFM 350 X MNH |
1991 |
| YAMAHA |
YFM 350 X MNH |
1992 |

Since 1940, Wiseco has manufactured forged pistons of outstanding quality for motorcycles, motocross bikes, snowmobiles, and 4-wheeler's. After almost 70 years in the industry, Wiseco has become synonymous with high-quality products that exceed the customer's requirements.
| Brand |
Model |
Year |
Name |
CC |
| YAMAHA |
YFM |
1987 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1988 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1989 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1990 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1991 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1992 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1993 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1994 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1995 |
Moto-4 |
350 |
| YAMAHA |
YFM |
1987 |
Big Bear |
350 |
| YAMAHA |
YFM |
1988 |
Big Bear |
350 |
| YAMAHA |
YFM |
1989 |
Big Bear |
350 |
| YAMAHA |
YFM |
1990 |
Big Bear |
350 |
| YAMAHA |
YFM |
1991 |
Big Bear |
350 |
| YAMAHA |
YFM |
1992 |
Big Bear |
350 |
| YAMAHA |
YFM |
1992 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1993 |
Big Bear |
350 |
| YAMAHA |
YFM |
1993 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1994 |
Big Bear |
350 |
| YAMAHA |
YFM |
1994 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1995 |
Big Bear |
350 |
| YAMAHA |
YFM |
1995 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1996 |
Big Bear |
350 |
| YAMAHA |
YFM |
1996 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1996 |
Big Bear |
350 |
| YAMAHA |
YFM |
1996 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1997 |
Big Bear |
350 |
| YAMAHA |
YFM |
1997 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1997 |
Big Bear |
350 |
| YAMAHA |
YFM |
1997 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1997 |
Big Bear |
350 |
| YAMAHA |
YFM |
1997 |
Big Bear Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1998 |
Big Bear |
350 |
| YAMAHA |
YFM |
1998 |
Big Bear |
350 |
| YAMAHA |
YFM |
1999 |
Big Bear |
350 |
| YAMAHA |
YFM |
1999 |
Big Bear Hunter |
350 |
| YAMAHA |
YFM |
1999 |
Big Bear |
350 |
| YAMAHA |
YFM |
1999 |
Big Bear |
350 |
| YAMAHA |
YFM |
2008 |
Grizzly |
350 |
| YAMAHA |
YFM |
2008 |
Grizzly Hunter |
350 |
| YAMAHA |
YFM |
2008 |
Grizzly IRS |
350 |
| YAMAHA |
YFM |
2008 |
Grizzly IRS Hunter |
350 |
| YAMAHA |
YFM |
2009 |
Grizzly |
350 |
| YAMAHA |
YFM |
2009 |
Grizzly |
350 |
| YAMAHA |
YFM |
2009 |
Grizzly Hunter |
350 |
| YAMAHA |
YFM |
2009 |
Grizzly IRS Hunter |
350 |
| YAMAHA |
YFM |
2010 |
Grizzly |
350 |
| YAMAHA |
YFM |
2010 |
Grizzly |
350 |
| YAMAHA |
YFM |
2010 |
Grizzly Hunter |
350 |
| YAMAHA |
YFM |
2010 |
Grizzly IRS |
350 |
| YAMAHA |
YFM |
2010 |
Grizzly IRS Hunter |
350 |
| YAMAHA |
YFM |
1987 |
Warrior |
350 |
| YAMAHA |
YFM |
1988 |
Warrior |
350 |
| YAMAHA |
YFM |
1989 |
Warrior |
350 |
| YAMAHA |
YFM |
1990 |
Warrior |
350 |
| YAMAHA |
YFM |
1991 |
Warrior |
350 |
| YAMAHA |
YFM |
1991 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1992 |
Warrior |
350 |
| YAMAHA |
YFM |
1992 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1993 |
Warrior |
350 |
| YAMAHA |
YFM |
1993 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1994 |
Warrior |
350 |
| YAMAHA |
YFM |
1994 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1995 |
Warrior |
350 |
| YAMAHA |
YFM |
1995 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1996 |
Warrior |
350 |
| YAMAHA |
YFM |
1996 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1997 |
Warrior |
350 |
| YAMAHA |
YFM |
1997 |
Warrior Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1998 |
Warrior |
350 |
| YAMAHA |
YFM |
1999 |
Warrior |
350 |
| YAMAHA |
YFM |
2000 |
Warrior |
350 |
| YAMAHA |
YFM |
2001 |
Warrior |
350 |
| YAMAHA |
YFM |
2002 |
Warrior |
350 |
| YAMAHA |
YFM |
2003 |
Warrior |
350 |
| YAMAHA |
YFM |
2004 |
Warrior |
350 |
| YAMAHA |
YFM |
1995 |
Wolverine |
350 |
| YAMAHA |
YFM |
1995 |
Wolverine Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1996 |
Wolverine |
350 |
| YAMAHA |
YFM |
1996 |
Wolverine Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1997 |
Wolverine |
350 |
| YAMAHA |
YFM |
1997 |
Wolverine Maine & New Hampshire |
350 |
| YAMAHA |
YFM |
1998 |
Wolverine |
350 |
| YAMAHA |
YFM |
1999 |
Wolverine |
350 |
| YAMAHA |
YFM |
2000 |
Wolverine |
350 |
| YAMAHA |
YFM |
2001 |
Wolverine |
350 |
| YAMAHA |
YFM |
2002 |
Wolverine |
350 |
| YAMAHA |
YFM |
2003 |
Wolverine |
350 |
| YAMAHA |
YFM |
2004 |
Wolverine |
350 |
| YAMAHA |
YFM |
2005 |
Wolverine |
350 |
| YAMAHA |
YFM |
2005 |
Wolverine Sport |
350 |
| YAMAHA |
YFM |
2006 |
Wolverine Sport |
350 |
| YAMAHA |
YFM |
2007 |
Wolverine Sport |
350 |
| YAMAHA |
YFM |
2008 |
Wolverine Sport |
350 |
| YAMAHA |
YFM |
2009 |
Wolverine Sport |
350 |
| YAMAHA |
YFM |
2004 |
Bruin |
350 |
| YAMAHA |
YFM |
2004 |
Bruin |
350 |
| YAMAHA |
YFM |
2004 |
Bruin Hardwood Camo |
350 |
| YAMAHA |
YFM |
2005 |
Bruin |
350 |
| YAMAHA |
YFM |
2005 |
Bruin |
350 |
| YAMAHA |
YFM |
2005 |
Bruin Hunter |
350 |
| YAMAHA |
YFM |
2006 |
Bruin |
350 |
| YAMAHA |
YFM |
2006 |
Bruin |
350 |
| YAMAHA |
YFM |
2006 |
Bruin Hunter |
350 |
| YAMAHA |
YFM |
2004 |
Raptor |
350 |
| YAMAHA |
YFM |
2005 |
Raptor |
350 |
| YAMAHA |
YFM |
2005 |
Raptor SE |
350 |
| YAMAHA |
YFM |
2006 |
Raptor |
350 |
| YAMAHA |
YFM |
2006 |
Raptor SE |
350 |
| YAMAHA |
YFM |
2007 |
Raptor |
350 |
| YAMAHA |
YFM |
2007 |
Raptor SE |
350 |
| YAMAHA |
YFM |
2007 |
Raptor SE2 |
350 |
| YAMAHA |
YFM |
2008 |
Raptor |
350 |
| YAMAHA |
YFM |
2009 |
Raptor |
350 |
| YAMAHA |
YFM |
2010 |
Raptor |
350 |
| YAMAHA |
YFM |
2008 |
Grizzly |
350 |
| YAMAHA |
YFM |
2007 |
Grizzly |
350 |
| YAMAHA |
YFM |
2007 |
Grizzly |
350 |
| YAMAHA |
YFM |
2007 |
Grizzly IRS Hunter |
350 |
| YAMAHA |
YFM |
2007 |
Grizzly IRS |
350 |
| YAMAHA |
YFM |
2011 |
Grizzly |
350 |
| YAMAHA |
YFM |
2011 |
Grizzly IRS |
350 |
| YAMAHA |
YFM |
2011 |
Grizzly |
350 |
| YAMAHA |
YFM |
2011 |
Grizzly Hunter |
350 |
| YAMAHA |
YFM |
2011 |
Grizzly IRS Hunter |
350 |
| YAMAHA |
YFM |
2011 |
Raptor |
350 |
| YAMAHA |
YFM |
2012 |
Raptor |
350 |
| YAMAHA |
YFM |
2012 |
Grizzly |
350 |
| YAMAHA |
YFM |
2012 |
Grizzly Hunter |
350 |
| YAMAHA |
YFM |
2012 |
Grizzly |
350 |
| YAMAHA |
YFM |
2012 |
|
350 |
| YAMAHA |
YFM |
2004 |
Bruin |
350 |
| YAMAHA |
YFM |
2005 |
Bruin |
350 |
| YAMAHA |
YFM |
2006 |
Bruin |
350 |
| YAMAHA |
YFM |
2004 |
Bruin |
350 |
| YAMAHA |
YFM |
2005 |
Bruin |
350 |
| YAMAHA |
YFM |
2006 |
Bruin |
350 |
| YAMAHA |
YFM |
2013 |
Grizzly |
350 |
| YAMAHA |
YFM |
2013 |
Grizzly Hunter |
350 |
| YAMAHA |
YFM |
2013 |
Raptor |
350 |
| YAMAHA |
YFM |
2013 |
Grizzly |
350 |
| YAMAHA |
YFM |
2013 |
|
350 |
| YAMAHA |
YFM |
2009 |
Grizzly IRS |
350 |