Wossner 8936DA Piston Kit - 2017-2026 Honda CRF450R CRF450RX CRF450RWE Size A

Wossner 8936DA Premium Series Forged 4-Stroke Piston Kit - Standard Size A

Dominate the track and trail with the Wossner 8936DA Piston Kit, specifically engineered for the modern Honda CRF450R family. Covering models from 2017 through 2026, including the RX and Works Edition (RWE), this Premium Series forged kit is the professional choice for restoring "Factory Quality" power. At Moto-House MX, we know that the CRF450 engine is a high-compression powerhouse that demands the strongest internal components; Wossner’s aerospace-grade forging delivers the durability required for elite-level motocross and cross-country racing.

Forged from aerospace-grade aluminum alloy, the 8936DA features a high-performance 13.5:1 compression ratio, providing the crisp throttle response and massive top-end pull that Honda riders expect. This piston includes advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a vital feature for the intense heat and RPMs generated by modern 450cc engines. The permanent skirt coating reduces internal friction and piston rock, resulting in a quieter engine and a safer, more efficient break-in period. This Standard Size A piston (95.95mm) is precision-matched for 96.00mm bores, restoring your machine to its original race-winning tolerances.

Top Features: Wossner 8936DA Piston Kit

• Standard Size A (95.95mm Piston): Precision-engineered for 96.00mm bores to maintain factory-spec clearances and maximum mechanical efficiency.
• High-Performance 13.5:1 Compression: Delivers the snap and power needed for competitive racing while maintaining forged reliability.
• Premium Series Forging: Significantly stronger and more heat-resistant than OEM cast pistons, ideal for the high-impact stress of 450cc motocross.
• Advanced Lubrication Design: Radial boss machining and specialized oiling slots ensure the wrist pin stays lubricated during sustained high-load operation.
• Low-Friction Skirt Coating: Permanent coating minimizes 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 modern CRF450R is a precision instrument. When performing a top-end refresh with the 8936DA, we strongly recommend a thorough inspection of your intake and exhaust valves and the replacement of your cam chain. Size A is the ideal choice for a new or well-maintained cylinder within factory limits. Using a fresh top-end gasket kit and premium synthetic oil is essential to protect your investment and maintain that signature Honda Unicam power.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2017-2026	Honda	CRF450R / CRF450RX
2019-2026	Honda	CRF450RWE (Works Edition)
2022-2024	Honda	CRF450R-S

Frequently Asked Questions

Q: Is this a Standard Size piston?
A: Yes, this is the 95.95mm piston designed for the standard 96.00mm bore. It is the ideal choice for cylinders that are within factory service limits or have been freshly replated.

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 Honda 450?
A: Wossner forged pistons are denser and stronger than original cast parts. They are specifically engineered to handle the thermal and mechanical stresses of modern 4-stroke racing more effectively, providing superior durability for your CRF.

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 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.