Wossner 8066DC Piston Kit - 2002-2004 Honda CR250R Standard Size C

Wossner 8066DC Standard Series Forged 2-Stroke Piston Kit - Standard Size C

Bring the legendary snap back to your Honda with the Wossner 8066DC Piston Kit. Specifically engineered for the 2002-2004 Honda CR250R, this "Size C" forged kit is the professional choice for riders performing a top-end refresh on a cylinder with several seasons of use. At Moto-House MX, we know that the third-generation CR250R frame and case-reed engine are favorites among 2-stroke enthusiasts; Wossner’s aerospace-grade forged construction ensures your engine remains reliable while delivering the crisp throttle response needed to master the track or trail.

Forged from high-performance aluminum alloy, the 8066DC features a dual-ring configuration. This design is highly sought after for the 250cc class as it provides superior cylinder sealing and improved heat dissipation, ensuring your engine maintains consistent compression throughout your moto. To ensure maximum service life, Wossner applies a permanent molybdenum disulphide skirt coating that reduces friction and prevents piston rock. Precision-machined for 66.42mm bores, this 66.36mm piston kit provides the exact tolerances needed to restore your CR250R’s powerband.

Top Features: Wossner 8066DC Piston Kit

• Standard Size C (66.36mm): Precision-machined for 66.42mm bores to compensate for minor cylinder wear and restore factory-correct clearances.
• Dual Ring Configuration: Provides an exceptional secondary seal and enhanced cooling, offering a broader and more reliable power delivery.
• Aerospace-Grade Forging: Significantly stronger and more resilient to thermal stress than OEM cast pistons, ensuring superior durability under racing conditions.
• Low-Friction Skirt Coating: Permanent skirt treatment minimizes internal drag, protects the cylinder wall, and ensures a smoother break-in period.
• Optimized Reciprocating Mass: Expertly machined to maintain strength in critical areas while remaining lightweight for faster engine acceleration.
• Complete Assembly: Includes the high-performance forged Size C piston, dual rings, wrist pin, and circlips.

Expert Pro-Tip: The 2002-2004 Honda CR250R is famous for its handling and refined 2-stroke power. To keep your engine at peak performance, stepping up to a Wossner Size C (66.36mm) is the standard method to account for the microscopic wear that occurs in used cylinders. Always use a precision bore gauge to confirm your cylinder measures 66.42mm before installation. For a professional-grade rebuild, always install with a fresh top-end gasket kit and utilize premium synthetic 2-stroke oil to protect your forged assembly.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2002-2004	Honda	CR250R

Frequently Asked Questions

Q: When should I choose Size C instead of Size A or B?
A: Size C (66.36mm) is 0.02mm larger than Size A. It is typically used for a cylinder that has logged significant hours to maintain the tight piston-to-wall clearance necessary for maximum horsepower and to prevent piston slap.

Q: What is the advantage of a forged piston for my CR250R?
A: Forged pistons are denser and stronger than the original cast pistons. They are much less likely to shatter under extreme stress, making them a vital upgrade for both motocross and off-road racing.

Q: Does this kit include everything needed for the piston change?
A: Yes, the kit includes the forged piston, dual rings, wrist pin, and pin locks. You will just need to add a top-end gasket kit to complete the installation.

Recommended Pairings

• Complete Top End Gasket Set: Essential for maintaining a perfect seal and correct squish heights on your CR250R.
• Motul 800 2T Factory Line: High-performance lubricant to ensure your new forged piston stays protected at high RPMs.

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.