Wossner 8608DB Piston Kit - 2005-2017 Honda CRF450X / 2005-2008 CRF450R Size B

Wossner 8608DB Premium Series Forged 4-Stroke Piston Kit - Size B

Refresh the heart of your Honda 450 with the Wossner 8608DB Piston Kit. Specifically engineered for the legendary 2005-2017 Honda CRF450X and the 2005-2008 CRF450R, this Premium Series forged kit is the professional choice for restoring "Factory Quality" power. At Moto-House MX, we know these Unicam engines are built for endurance; Wossner’s aerospace-grade forged components provide the precision fitment needed to keep your machine performing at its peak even after hours of hard riding.

Forged from aerospace-grade aluminum alloy, the 8608DB maintains a reliable 12.0:1 compression ratio, providing smooth power delivery and excellent durability for both motocross and long-distance off-road riding. This kit features advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a critical upgrade for the high-temperature environments 450cc engines face. The permanent skirt coating reduces internal friction and piston rock, resulting in a quieter engine and a more efficient break-in. This Size B piston (95.97mm) is precision-matched for 96.01mm bores, making it the perfect choice for an engine refresh that compensates for natural cylinder wear in seasoned machines.

Top Features: Wossner 8608DB Piston Kit

• Size B (95.97mm): Precision-engineered for 96.01mm bores, restoring factory-spec clearances in cylinders with slight wear.
• 12.0:1 Compression Ratio: Matches original specifications for reliable, consistent power and compatibility with premium pump fuel.
• Premium Series Forging: Significantly stronger and more heat-resistant than OEM cast pistons, ideal for high-load racing and enduro applications.
• Enhanced Lubrication Design: Radial boss machining and specialized oiling slots ensure the wrist pin stays lubricated during intense, high-RPM 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 Honda CRF450 series relies on tight tolerances for its high-performance Unicam head. When performing a top-end refresh with the 8608DB, we strongly recommend a thorough inspection of your valve train and cam chain. Size B is the preferred choice for a refresh when your cylinder is still in good condition but has worn slightly beyond the ideal clearance for a Size A piston. Always use a fresh top-end gasket kit and premium synthetic oil to ensure your new forged piston performs at its peak.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2005-2017	Honda	CRF450X
2005-2008	Honda	CRF450R

Frequently Asked Questions

Q: When should I choose a Size B piston?
A: Size B (95.97mm) is designed for cylinders that have been broken in and have worn slightly larger than the original factory bore. This size restores the proper piston-to-wall clearance, helping to prevent piston slap and maintain optimal compression.

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: Is Wossner better than the original Honda piston?
A: Wossner forged pistons are denser and stronger than stock cast parts. They are designed to handle the thermal and mechanical stresses of high-performance 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.