87-04 for Yamaha YFM 350 X Warrior WISECO Piston Kit Raptor 11:1 40109M08300
87-04 for Yamaha YFM 350 X Warrior WISECO Piston Kit Raptor 11:1 40109M08300

87-04 for Yamaha YFM 350 X Warrior WISECO Piston Kit Raptor 11:1 40109M08300

WISECO

$225.06

Quantity

Manufacturer: Wiseco
MPN: 40109M08300
Title: Piston Kit
Size: Standard Bore 83.00mm, 11:1 Compression

Racing Choice Pistons are 1 ring, 2-Stroke or 2 ring, 4-Stroke with reduced weight and friction as well as increased power and throttle response. Note that service intervals may be increased over conventional Wiseco Pistons. 2-Stroke Pro-Lite Pistons feature lightweight forging for instant throttle response and maximum torque. Computer engineered piston skirt profiles provide minimal cylinder wall friction. Anti-detonation grooves and new ring land diameter eliminates ring blow-by while maximizing engine performance. Piston kit includes pistons, rings, wrist pins and circlips. Note that oversize requires cylinder sleeving and top end bearing is not included in kits. 4-Stroke Pistons feature dedicated forging for lightweight and superior strength. Race-ready dome design provides improved combustion flow and armor glide skirt coating provides reduced friction (racing applications only). Piston kit includes piston, rings, wrist pin and circlips. Note that oversize requires cylinder sleeving.

Fitment Chart

YearMakeModelPositionNotes
2007-2014YamahaGrizzly 350 4x4--
2005-2013YamahaRaptor 350 4x2--
1999YamahaBig Wheel 350--
1989-1999YamahaBig Bear 350 4x4--
1987-2004YamahaYFM 350 Warrior--