Wossner 8932DA Piston Kit - 2017-2019 Kawasaki KX250 KX250F Size A

Wossner 8932DA Premium Series Forged 4-Stroke Piston Kit - Standard Size A

Take your Kawasaki to the next level with the Wossner 8932DA Piston Kit. Specifically engineered for the 2017-2018 KX250F and the 2019 KX250, this Premium Series forged kit is the professional choice for riders demanding "Factory Quality" power and superior durability. At Moto-House MX, we know that the 250cc class is won by those with the sharpest throttle response; Wossner’s high-compression forging delivers the mechanical edge needed to pull holeshots and clear the big triples.

Forged from aerospace-grade aluminum alloy, the 8932DA features a performance-tuned 14.0:1 compression ratio, providing a significant increase in torque and engine snap compared to standard cast alternatives. This kit includes advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a critical upgrade for the ultra-high RPMs generated by modern Kawasaki 250 race engines. The permanent skirt coating reduces internal friction and piston rock, resulting in a quieter engine and a more controlled break-in period. This Standard Size A piston (76.96mm) is precision-matched for 77.00mm bores, restoring your Kawasaki to its original race-winning tolerances with an added compression boost.

Top Features: Wossner 8932DA Piston Kit

• Standard Size A (76.96mm): Precision-engineered for 77.00mm bores to maintain tight factory clearances and maximum mechanical efficiency.
• High-Compression 14.0:1 Ratio: Increases low-end grunt and mid-range pull, essential for competitive motocross racing.
• Premium Series Forging: Significantly stronger and more heat-resistant than OEM cast pistons, designed to handle the stress of high-revving 4-stroke engines.
• Advanced Lubrication Design: Radial boss machining and annular grooves ensure the wrist pin stays lubricated during intense, high-load 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 2017-2019 KX250 engine platform relies on high RPMs to produce its best power. When upgrading to a 14.0:1 compression piston like the 8932DA, we recommend using high-quality 93 octane pump gas or a race fuel blend to prevent detonation. During installation, always verify your squish clearance and check the condition of your timing chain. Pairing this build with a fresh top-end gasket kit and premium synthetic oil will ensure your Kawasaki remains a reliable front-runner.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2017-2018	Kawasaki	KX250F
2019	Kawasaki	KX250

Frequently Asked Questions

Q: Is this a Standard Size piston?
A: Yes, this is the 76.96mm piston designed for the standard 77.00mm bore. It is the ideal choice for cylinders that are new, freshly replated, or within original factory service limits.

Q: Will this increase my engine's power?
A: Yes. By moving to a 14.0:1 compression ratio, you will notice improved throttle response and more torque through the mid-range compared to a standard-compression stock piston.

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, leak-free engine rebuild.

Recommended Pairings

• Complete Top End Gasket Set: Ensure a professional seal for your high-compression engine rebuild.
• Motorex Cross Power 4T Oil: Premium synthetic lubrication specifically designed for high-performance 4-stroke race 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.