Wossner 4085DA Piston Kit 2023-2024 Yamaha YZ450F (96.96mm)

Is your modern four-stroke losing its competitive edge? When it’s time for a top-end refresh, the Wossner 4085DA Piston Kit provides the ultimate racing performance your Yamaha deserves. Engineered for riders who demand precision, this kit restores lost compression and ensures your YZ450F remains a front-runner. At Moto-House MX, we only stock components that meet the rigorous demands of professional motocross.

Forged from aerospace-grade aluminum alloy, this Wossner piston features a double-bridge forging and a 3D crown design for maximum structural integrity. The skirt is treated with a high-quality permanent coating, significantly reducing friction and "piston rock" for a quieter, smoother-running engine. This optimized machining achieves a perfect balance of lightness and extreme strength in critical areas like the crown and skirt wall, ensuring your engine can handle high-RPM abuse with unmatched durability.

Top Features: Wossner 4085DA Piston Kit

• Double Bridge Forging: Enhanced structural support for high-output 4-stroke engines.
• Aerospace Grade Aluminum: Forged for superior strength-to-weight ratio and heat resistance.
• Anti-Friction Skirt Coating: Permanent coating reduces wear and improves engine performance.
• 3D Crown Design: Optimized combustion chamber fit for efficient power delivery.
• Complete Rebuild Kit: Includes the piston, ring set, wrist pin, and retaining clips for a seamless installation.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2023 - 2024	Yamaha	YZ450F

Frequently Asked Questions

Q: Is this a standard size piston for the YZ450F?
A: Yes, this is a "Standard Size A" piston with a 96.96mm diameter, designed for the standard 97.00mm bore of the 2023-2024 Yamaha YZ450F.

Q: What is the compression ratio of this Wossner piston?
A: This kit maintains a high-performance 13.0:1 compression ratio, ideal for maintaining OEM-plus power levels and reliability.

Q: What is included in the box?
A: The kit is ready to install and includes the Piston (#4085DA), Ring Set (#RIK97.00), Wrist Pin (#WP072-SP), and Retaining Clips (#CW18).

Upgrade your engine with the choice of professionals. Buy the Wossner 4085DA Piston Kit now at Moto-House MX.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The best motocross shop in Central Florida.