00-'06 for Yamaha YFM400FB Big Bear 4WD [SRA] Piston Kit 83.50/+0.50 8.6:1 Yam state-of-the-art zirconium-based ceramic material on

state-of-the-art zirconium-based ceramic material on backplate works as a heat shield in maximum-stress race conditions

Boost horsepower and torque

MPN: EZLE001

with lines and materials designed to match specific bikes

Option: White Face

00-'06 for Yamaha YFM400FB Big Bear 4WD [SRA] Piston Kit 83.50/+0.50 8.6:1 Yam state-of-the-art zirconium-based ceramic material onManufacturer: Wiseco MPN: 4676M08350 Title: Piston Kit Size: 0. 50mm Oversize to 83. 50mm Forged from high silicon aluminum alloy for maximum strength and dependability Wiseco offers a complete range of popular piston models and years for both trail and racing applications WISECO FEATURES PRO LITE PISTONS Innovative forging design and piston skirt provide maximum horsepower and torque Durability, longevity and increased horsepower PK PISTON KITS