Description
Restore the legendary snap of your vintage Yamaha engine with the Wossner 0910-5568 Forged Piston Kit. When original components wear down, losing compression and reliability, this heavy-duty racing performance kit from Moto-House MX provides the ultimate top-end solution. Designed to withstand the high-heat cycles of 2-stroke combustion, this piston ensures your machine stays on the track and out of the shop.
Engineering excellence is at the core of Wossner components. Each piston is forged from aerospace-grade aluminum alloy, offering superior strength over cast alternatives while remaining incredibly lightweight. To maximize longevity, the piston features a permanent skirt coating that minimizes friction and “piston rock,” ensuring the Yamaha YTZ250 and Yamaha IT250 run quieter and smoother even under extreme racing conditions.
Top Features: Wossner 8175D100 Piston Kit
- Forged Aerospace Aluminum: Provides high-tensile strength and durability for high-RPM 2-stroke applications.
- Anti-Friction Skirt Coating: Reduces wear and piston rock for a quieter, more efficient engine.
- Precision Weight Reduction: Optimized machining reduces reciprocating mass without compromising crown or skirt wall integrity.
- Complete Rebuild Solution: Each kit includes the forged piston, high-performance rings, wrist pin, and circlips.
Expert Pro-Tip: Always measure your cylinder bore professionally to ensure the +1.00mm oversize is the correct fit for your current sleeve condition before installation.
Fitment List
| Year Range | Vehicle Brand | Vehicle Model & Size |
|---|---|---|
| 1985-1986 | Yamaha | YTZ250 Tri-Z |
| 1983 | Yamaha | IT250 |
Frequently Asked Questions
Q: Is this piston compatible with a stock bore?
A: No, this is a +1.00mm oversize (69.00mm bore), which requires your Yamaha YTZ250 or IT250 cylinder to be bored to match.
Q: What are the benefits of a forged piston over a cast one?
A: Forged pistons are denser and stronger, making them much more resistant to cracking under the high-stress environment of a 2-stroke engine.
Q: Does the kit include everything needed for the top end?
A: It includes the piston, rings, pin, and clips. We recommend purchasing a top-end gasket kit separately to complete the assembly.
Recommended Pairings:
1. Cometic Top-End Gasket Kits
2. Maxima Castor 927 2-Stroke Premix Oil
Stop by our local Store Montverde, FL or lightning-fast shipping across the USA.
Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida.
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