Wossner 8023DA Piston Kit - 1992-1998 Yamaha YZ250 WR250 2-Stroke Motocross

Wossner 8023DA Premium Forged 2-Stroke Piston Kit

Refresh your classic Yamaha 2-stroke with the Wossner 8023DA Piston Kit, engineered to restore the Factory Quality power and crisp throttle response your machine was built for. Designed specifically for the 1992-1998 YZ250 and WR250 engine platforms, this kit provides the durability and precision required for aggressive off-road and motocross riding. At Moto-House MX, we provide the high-performance components needed to keep your 249cc engine reliable and competitive.

Forged from aerospace-grade aluminum alloy, this piston offers superior strength and heat resistance compared to standard cast alternatives. The permanent skirt coating significantly reduces friction and piston rock, resulting in a quieter engine and improved mechanical efficiency. With optimized machining that balances extreme lightness and structural integrity, the 8023DA is built to withstand the stresses of high-RPM 2-stroke operation.

Top Features: Wossner 8023DA Piston Kit

• Aerospace Forged Alloy: Premium aluminum construction for maximum durability and thermal stability.
• Low-Friction Skirt Coating: Permanent coating reduces internal wear and engine noise for smoother operation.
• Dual-Ring Design: Optimized for an exceptional combustion seal and consistent compression throughout the powerband.
• Precision Machining: Lightweight design reduces reciprocating mass for faster revving and improved performance.
• Complete Kit: Includes everything needed for a top-end refresh: forged piston, rings, wrist pin, and clips.

Expert Pro-Tip: When rebuilding your Yamaha 250, always inspect the cylinder for any scoring or wear in the plating. Ensure you install the piston with the arrow or "EX" mark pointing toward the exhaust port for proper timing and performance.

Fitment List

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

Frequently Asked Questions

Q: Is this a Standard Size A piston?
A: Yes, this is the 67.94mm piston designed for the standard 68.00mm Yamaha bore.

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

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

Recommended Pairings

• Top End Gasket Kit: Essential for a leak-free seal during your Yamaha engine rebuild.
• Motorex Cross Power 2T Oil: The ultimate synthetic lubrication choice for high-performance Yamaha 2-strokes.

Restore your Yamaha’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.