Wossner 8920DA Piston Kit - 2015 Kawasaki KX450F Size A

Wossner 8920DA Standard Series Forged 4-Stroke Piston Kit - Size A

Bring your Kawasaki back to the front of the pack with the Wossner 8920DA Piston Kit. Specifically engineered for the 2015 Kawasaki KX450F, this Standard Series forged kit is the professional choice for riders demanding "Factory Quality" performance and long-term reliability. At Moto-House MX, we understand the high-revving nature of the KX450F; Wossner’s aerospace-grade forged components provide the structural integrity needed to handle the intense loads of modern motocross.

Forged from aerospace-grade aluminum alloy, the 8920DA features a 12.8:1 compression ratio, maintaining the sharp throttle response and broad powerband the KX450F is known for. This kit includes advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a critical feature for the high-RPM demands of 450cc racing. The permanent skirt coating reduces internal friction and piston rock, resulting in a quieter engine and a more efficient break-in period. This Standard Size A piston (95.98mm) is precision-matched for 96.03mm bores, perfect for an engine refresh that restores your Kawasaki to original tolerances.

Top Features: Wossner 8920DA Piston Kit

• Standard Size A (95.98mm): Precision-engineered for 96.03mm bores to maintain factory-spec clearances and maximum compression.
• 12.8:1 Compression Ratio: Delivers reliable, race-ready power that is compatible with high-quality pump fuel.
• Aerospace Forged Alloy: Significantly stronger and more heat-resistant than OEM cast pistons, ideal for the high-impact stress of off-road racing.
• Enhanced Lubrication Design: Radial boss machining and annular grooves ensure the wrist pin stays lubricated during sustained high-load operation.
• Low-Friction Skirt Coating: Permanent coating reduces drag and protects your cylinder walls from premature wear.
• Complete Assembly: Kit includes the forged piston, high-performance rings, wrist pin, and pin locks.

Expert Pro-Tip: The 2015 KX450F is a powerhouse, but top-end maintenance is key to preventing costly engine failures. Size A is the ideal choice for a cylinder that is still within factory service limits or has been freshly replated. When installing the 8920DA, always check your ring end gap and inspect your cam chain and tensioner. Pairing this build with a fresh top-end gasket kit and premium synthetic oil will ensure your Kawasaki stays reliable for many motos to come.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2015	Kawasaki	KX450F

Frequently Asked Questions

Q: Is this a Standard Size piston?
A: Yes, this is the 95.98mm piston designed for the standard 96.03mm bore found on the 2015 KX450F. It is the correct choice for cylinders within factory service limits.

Q: Does this kit include the gasket set?
A: No, the kit includes the forged piston, rings, wrist pin, and locks. A complete top-end gasket set is sold separately and is required for a professional engine rebuild.

Q: Why choose Wossner for my Kawasaki?
A: Wossner forged pistons are denser and stronger than original cast parts. They handle high heat and mechanical stress more effectively, providing a superior safety margin during racing and aggressive trail riding.

Recommended Pairings

• Complete Top End Gasket Set: Ensure a professional, leak-free seal and proper engine compression.
• Motorex Cross Power 4T Oil: Premium synthetic lubrication specifically designed for high-performance 4-stroke race engines.

Restore your machine’s power and precision today. Buy now at Moto-House MX!

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida. Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.