Yamaha YFM 350 Piston Kits Warrior Pistons Big Bear 350 Piston Kits Standard Bore and Big Bore

High performance and racing Yamaha piston kits are available here. Buy the best Wiseco Pistons for all model years of the YFM350 Warrior / 350 Big Bear four stroke ATV's. Standard bore size and big bore YFM 350 Big Bear / Warrior 350 big bore Wiseco Pistons Yamaha ATV kits are listed below.

Every Wiseco piston is designed with the proper installed clearance to produce the most power, least wear, and best piston ring seal at operating temperature, for each application. Wiseco forged pistons include coated skirts and provide greater strength, durability and reduced weight compared to stock type pistons. These pistons come with performance piston rings and lightweight piston pins and offer the highest quality and are engineered for maximum performance and durability.

Wiseco YFM 350 Warrior Pistons, Piston Kits, Top End Gasket Kits YFM350 XT & WT Big Bear Piston Kits

These Wiseco Yamaha pistons, gaskets and kits fit the following models:

• 1987 - 2004 Yamaha Warrior YFM350 XT
• 1989 - 1999 Yamaha Big Bear YFM 350 WT
• 2005 - 2010 Yamaha Raptor 350
• 1999 Yamaha BW350T
• 1999 Yamaha Moto 4

Common YFM350 engine specifications

• Stock Bore is 83mm
• Stock Stroke is 64.5mm

Gasket Kit

(fits all models except 1999 BW350T)

Wiseco 4419M08300

$150.09 $105.06

Wiseco PK1018

$197.96 $138.57

Wiseco W5746

$49.95 $34.97

Wiseco 4419M08350

$150.09 $105.06

Wiseco PK1019

$197.96 $138.57

Wiseco W5746

$49.95 $34.97

Wiseco 4419M08400

$150.09 $105.06

Wiseco PK1020

$197.96 $138.57

Wiseco W5746

$49.95 $34.97