Wossner 8023DC Piston Kit - 1992-1998 Yamaha YZ250 WR250 2-Stroke Size C

Wossner 8023DC Premium Forged 2-Stroke Piston Kit - Size C

When your high-hour Yamaha 250 engine requires a precise top-end refresh, the Wossner 8023DC Size C Piston Kit is the professional choice for restoring Factory Quality performance. This 67.96mm forged piston is engineered specifically for cylinders that have experienced natural wear, ensuring the exact piston-to-wall clearance needed for peak compression. At Moto-House MX, we provide the technical solutions required to keep your 2-stroke powerhouse running smoothly on every trail.

Forged from aerospace-grade aluminum alloy, this piston offers superior structural integrity and heat resistance compared to cast alternatives. The permanent skirt coating significantly reduces internal friction and piston rock, resulting in a quieter engine and extended service life. Whether you are riding technical enduro on a WR250 or hitting the motocross track on a YZ250, the dual-ring design of the 8023DC provides consistent power delivery and reliable compression seal for your 249cc Yamaha engine.

Top Features: Wossner 8023DC Piston Kit

• Standard Size C (67.96mm): Designed for cylinders with a 68.02mm bore to maintain optimal mechanical clearances.
• Aerospace Forged Alloy: Premium aluminum construction for maximum strength-to-weight ratio and durability.
• Permanent Skirt Coating: Minimizes wear and friction for a quieter running engine and efficient break-in.
• Dual-Ring Design: Optimized for an exceptional combustion seal and consistent 2-stroke power.
• Complete Assembly: Kit includes the forged piston, high-performance rings, wrist pin, and clips.

Expert Pro-Tip: Accurate measurement is key for older 2-stroke cylinders. Use a bore gauge to check your cylinder at multiple points. If your cylinder shows wear reaching the 68.02mm range, the Size C piston is essential to prevent piston slap and maintain stability at high RPMs.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
1992-1998	Yamaha	YZ250
1992-1997	Yamaha	WR250

Frequently Asked Questions

Q: When should I choose a Size C piston?
A: Size C is typically used after a cylinder has seen significant use and has worn slightly beyond the A or B specifications. It allows you to maintain the correct clearance without the immediate need for a cylinder re-plate.

Q: Does this include the wrist pin bearing?
A: No, the kit includes the piston, rings, pin, and clips. We highly recommend purchasing a new wrist pin bearing separately during a rebuild.

Q: Will this fit my 1999 or newer Yamaha YZ250?
A: No, this specific kit is designed for the 1992-1998 engine platform. Please check our other listings for newer model years.

Recommended Pairings

• Top End Gasket Kit: Ensure a leak-free seal for your Yamaha 250 rebuild.
• Motorex Cross Power 2T Oil: The ultimate protection for high-performance 2-stroke pistons.

Restore your Yamaha’s legendary punch 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.