Wiseco Pistons 4989M10100 High-Performance Forged Piston Kit Compression - 10.5 1

The Wiseco 4989M10100 high-performance piston kit delivers enhanced power and reliability for Honda XR650 engines. Precision-engineered for demanding off-road and dual-sport applications, this complete piston assembly provides a 10.5:1 compression ratio for optimized performance.

Key Features:

• Forged from high-silicon aluminum alloy for maximum strength and heat resistance
• Innovative forging design optimizes skirt geometry for reduced friction and increased horsepower
• Complete kit includes forged piston, performance rings, wrist pin, and circlips
• 10.5:1 compression ratio provides improved throttle response and torque
• Engineered to meet or exceed OEM specifications for precise fit
• ArmorGlide skirt coating reduces wear and noise during break-in

Wiseco pistons are the choice of professional racers and serious enthusiasts worldwide. Each piston is manufactured to exacting tolerances using advanced forging processes that create a superior grain structure for maximum durability under extreme conditions. The high-silicon aluminum alloy dissipates heat efficiently while maintaining dimensional stability across a wide temperature range.

Important Note: Oversize pistons require proper cylinder boring and honing by a qualified machine shop. Always verify piston-to-wall clearance before installation.