Wiseco Piston Standard Yamaha YZ 85 2002-2021 805M04750

The stock piston in your YZ 85 can't keep up with the demands of competitive racing or aggressive trail riding. Wiseco's forged piston delivers the compression consistency, durability, and power output you need to stay competitive across multiple seasons of hard use. Built with high-silicon aluminum and E-coated critical surfaces, this piston maintains its performance characteristics even under extreme heat and cylinder pressures.

Whether you're rebuilding after a top-end failure or upgrading for measurable performance gains, the Wiseco Standard piston is a bolt-in replacement that requires no cylinder modification. The optimized design produces a more responsive powerband while the enhanced ring sealing ensures every combustion cycle counts.

• High-silicon aluminum alloy
• Forged construction for durability
• E-coated crown and grooves
• Includes rings, wrist pin, circlips
• Superior bore sealing design
• Improved compression consistency
• Enhanced torque delivery
• Fits YZ 85 2002–2021
• Bolt-on installation
• MPN: 805M04750