Wossner 8169DA Piston Kit - KTM 250 SX/XC Husqvarna TC/TE Gas Gas 250

Wossner 8169DA Premium Forged 2-Stroke Piston Kit - Standard Size A

Maintain the race-winning edge of your European 2-stroke with the Wossner 8169DA Piston Kit. Engineered specifically for the KTM, Husqvarna, and Gas Gas 250cc engine platforms, this Standard Size A kit is the professional choice for restoring Factory Quality power and reliability. At Moto-House MX, we provide the high-performance forged components required to handle the high-revving demands of modern fuel-injected (TPI) and carbureted 250cc engines.

Forged from aerospace-grade aluminum alloy, this piston offers superior structural integrity and thermal resistance compared to standard cast alternatives. The permanent skirt coating is a critical feature, reducing internal friction and piston rock for a quieter engine and smoother throttle response. Optimized machining ensures a lightweight design that doesn't compromise strength in key areas like the crown and skirt walls, providing the durability needed for both intense motocross and technical off-road riding.

Top Features: Wossner 8169DA Piston Kit

• Standard Size A (66.34mm Piston): Precision-engineered for the standard 66.40mm bore to maintain perfect factory tolerances.
• Aerospace Forged Alloy: Premium aluminum construction for maximum durability and resistance to high-temperature fatigue.
• Low-Friction Skirt Coating: Permanent coating reduces wear and mechanical noise for a more efficient engine.
• Dual-Ring Design: Optimized for a consistent combustion seal and maximum compression across the powerband.
• Complete Assembly: Kit includes the forged piston, high-quality rings, wrist pin, and clips.

Expert Pro-Tip: When rebuilding modern KTM/Husqvarna/Gas Gas 250 engines, particularly TPI models, always ensure your power valve is cleaned and timed correctly. Using a new top-end gasket kit is essential for a leak-free seal. For TPI owners, this refresh is a great time to inspect your crankcase pressure sensor and oil pump performance to ensure long-term reliability.

Fitment List

Brand	Models	Year Range
KTM	250 SX / XC / XC-W / EXC (Including TPI)	2005-2023
Husqvarna	TC250 / TE250 / TE250i	2014-2023
Gas Gas	MC 250 / EX 250 / EC 250	2021-2025
KTM	Freeride 250 R	2014-2018

Frequently Asked Questions

Q: Is this a Standard Size piston?
A: Yes, this is the 66.34mm Piston designed for the standard 66.40mm bore. If your cylinder plating is worn beyond service limits, you may need to consider a Size B or a re-plate.

Q: Does this kit work with TPI (Transfer Port Injection) models?
A: Yes, this forged piston is fully compatible with both carbureted and TPI fuel-injected 250cc engines from KTM, Husqvarna, and Gas Gas.

Q: Does this kit include the wrist pin bearing?
A: No, the kit includes the piston, rings, pin, and clips. We highly recommend purchasing a new small-end bearing separately whenever you perform a top-end refresh.

Recommended Pairings

• Top End Gasket Kit: Essential for a professional, leak-free engine rebuild.
• Motorex Cross Power 2T Oil: The recommended synthetic lubrication for high-performance European 2-strokes.

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.