Wiseco Forged Piston kitRef : WI00337A / 1095612001

WISECO Forged Piston - Ref. W4939M08450

Designed for Yamaha 450 quads, this WISECO forged piston meets the maintenance and replacement requirements for 450 cm³ engines. Made from aluminum, it features a STD oversize and an oversize letter A, with a nominal diameter of Ø 84.50 mm. Manufacturer reference inscribed: XX8450 S520 CW20.

• Type: Forged piston
• Material: Aluminum
• Diameter: Ø 84.50 mm (letter A)
• Oversize: STD
• Compression: Standard
• Manufacturer reference: W4939M08450

Compatible with several 450 cm³ models, including:

• YAMAHA YFM 450 WOLVERINE 4WD (2009)
• YAMAHA YFM 450 GRIZZLY CAMO 4WD (2009)
• YAMAHA YFM 450 GRIZZLY 4WD (2009)

Intended for replacement during an engine overhaul or a reboring to STD dimensions, this piston must be installed while respecting the manufacturer's tolerances: check the piston-cylinder clearance, verify axial and radial play, install the rings, and ensure correct orientation relative to intake/exhaust. For safe installation, use the appropriate pin and clips and follow workshop recommendations.