Description
Part Number: 186-4006
Fits the Following Models:
Yamaha Kodiak 400 4X4: 1993-1999
Yamaha Big Bear 400 IRS 4X4: 2007-2010
Yamaha Big Bear 400 4X4: 2000-2010
Yamaha Big Bear 400 2WD: 2000-2004
- MOS2 (Teflon/Molybdenum) Coated Skirts
A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures.
- Machined Smooth Heads
Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%
- Anodized Domes
Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons
- Hypereutectic Casting Process
Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures
Yamaha - 2010 YFM 400FBI Big Bear 4X4 [IRS] | 2009 YFM 400FBI Big Bear 4X4 [IRS] | 2008 YFM 400FBI Big Bear 4X4 [IRS] | 2007 YFM 400FBI Big Bear 4X4 [IRS] | 2006 YFM 400FWN Big Bear 4X4 [SRA] | 2005 YFM 400FWN Big Bear 4X4 [SRA] | 2004 YFM 400N Big Bear 2X4 [SRA] | 2004 YFM 400FWN Big Bear 4X4 [SRA] | 2003 YFM 400N Big Bear 2X4 [SRA] | 2003 YFM 400FWN Big Bear 4X4 [SRA] | 2002 YFM 400N Big Bear 2X4 [SRA] | 2002 YFM 400FWN Big Bear 4X4 [SRA] | 2001 YFM 400N Big Bear 2X4 [SRA] | 2001 YFM 400FWN Big Bear 4X4 [SRA] | 2000 YFM 400N Big Bear 2X4 [SRA] | 2000 YFM 400FWN Big Bear 4X4 [SRA] | 1999 YFM 400FA Kodiak 4X4 [SRA] | 1998 YFM 400FA Kodiak 4X4 [SRA] | 1997 YFM 400FA Kodiak 4X4 [SRA] | 1996 YFM 400FA Kodiak 4X4 [SRA] | 1995 YFM 400FA Kodiak 4X4 [SRA] | 1994 YFM 400FA Kodiak 4X4 [SRA] | 1993 YFM 400FA Kodiak 4X4 [SRA]