Wiseco Piston Yamaha YZF-R1 1998-1999 4312M07000

When you're pushing your YZF-R1 to its limits, stock pistons become a liability. The Wiseco 4312M07000 replaces them with a high-silicon alloy forging that withstands the thermal and mechanical stress of both sustained trail riding and race-pace engine loads. Proper piston selection directly impacts ring seal, compression consistency, and long-term engine durability—this part delivers all three.

Wiseco's engineering focuses on what matters: strength-to-weight ratio, thermal stability under extreme conditions, and precise tolerances that maintain compression across thousands of heat cycles. The 4312M07000 comes complete with rings and circlips, so you can move directly to installation without sourcing additional components.

• High-silicon alloy construction
• Includes rings and circlips
• Lightweight design
• Precision-engineered tolerances
• Fits 1998-1999 YZF-R1
• Optimized for racing and trail
• Enhanced thermal stability
• Improved compression retention