Wossner 8941DA Piston Kit - 2017-2019 KTM 350 EXC-F / Husqvarna FE350 Size A

Wossner 8941DA Pro Series Forged 4-Stroke Piston Kit - Standard Size A

Revitalize your dual-sport or adventure machine with the Wossner 8941DA Piston Kit. Specifically engineered for the 2017-2019 KTM 350 EXC-F and Husqvarna FE350, this Pro Series forged kit is the professional choice for maintaining "Factory Quality" power and long-range reliability. At Moto-House MX, we know that 350cc riders demand a perfect balance of lightweight agility and high-RPM durability; Wossner’s aerospace-grade forging delivers the strength required for both technical trails and open-road touring.

Forged from aerospace-grade aluminum alloy, the 8941DA features a reliable 12.5:1 compression ratio, providing crisp power delivery and smooth acceleration across the entire powerband. This kit incorporates advanced radial boss machining and enhanced oiling slots for superior wrist pin lubrication—a vital feature for the high-revving nature of modern 4-stroke engines. The permanent skirt coating reduces internal friction and piston rock, resulting in a quieter engine and a more efficient break-in period. This Standard Size A piston (87.95mm) is precision-matched for 88.00mm bores, restoring your machine to its original factory tolerances.

Top Features: Wossner 8941DA Piston Kit

• Standard Size A (87.95mm): Precision-engineered for 88.00mm bores to maintain factory-spec clearances and maximum mechanical efficiency.
• 12.5:1 Compression Ratio: Delivers consistent, reliable power that is perfectly suited for premium pump fuel and long-distance dual-sport riding.
• Pro Series Forging: Significantly stronger and more heat-resistant than OEM cast pistons, ideal for the high-temperature stresses of adventure touring.
• Advanced Lubrication Design: Radial boss machining and annular grooves ensure the wrist pin stays lubricated during sustained 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 KTM and Husqvarna 350 engine platforms are known for their high-revving capability. When performing a top-end refresh with the 8941DA, we strongly recommend inspecting your cam chain and valve clearances. Size A is the ideal choice for a cylinder that is still within factory service limits or has been freshly replated. Pairing this build with a fresh top-end gasket kit and premium synthetic oil will ensure your engine remains dependable for your next big adventure.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
2017-2019	KTM	350 EXC-F
2017-2019	Husqvarna	FE350

Frequently Asked Questions

Q: Is this a Standard Size piston?
A: Yes, this is the 87.95mm piston designed for the standard 88.00mm bore. It is the correct choice for cylinders within original factory service limits.

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 engine rebuild.

Q: Why choose Wossner for my KTM or Husqvarna?
A: Wossner forged pistons are denser and stronger than original cast parts. They are designed to handle high heat and mechanical stress more effectively, providing a superior safety margin for both aggressive trail riding and street use.

Recommended Pairings

• Complete Top End Gasket Set: Ensure a professional, leak-free seal and proper engine compression.
• Motorex Cross Power 4T Oil: Premium synthetic lubrication specifically designed for high-performance KTM and Husqvarna 4-stroke 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.