Wossner 8220DA Piston Kit - KTM 125 SX/XC Husqvarna TC125 Beta 125 RR Gas Gas MC 125 Size A

Wossner 8220DA Premium Forged 2-Stroke Piston Kit - Standard Size A

Keep your 125cc engine screaming at the front of the pack with the Wossner 8220DA Piston Kit. Specifically engineered for modern European 2-strokes including KTM, Husqvarna, Beta, and Gas Gas, this Standard Size A forged kit is the professional choice for restoring Factory Quality power. At Moto-House MX, we know that small-bore engines demand the highest quality components to survive the high-RPM stress of motocross and off-road racing; Wossner’s aerospace-grade forged alloy delivers exactly that.

Forged from aerospace-grade aluminum alloy, the 8220DA offers superior structural integrity and heat resistance compared to standard cast pistons. This kit features a permanent skirt coating to reduce internal friction and piston rock, resulting in a quieter engine and smoother throttle response. This Standard Size A piston (53.95mm) is designed for cylinders with a 54.00mm bore, providing the precise clearances needed for optimal performance in new or freshly plated cylinders.

Top Features: Wossner 8220DA Piston Kit

• Standard Size A (53.95mm): Precision-engineered for 54.00mm bores to restore original factory tolerances and compression.
• Aerospace Forged Alloy: Premium aluminum construction built to withstand the mechanical stress and heat of competitive 125cc racing.
• Low-Friction Skirt Coating: Permanent coating reduces wear on cylinder walls and ensures a more efficient break-in period.
• Single-Ring Performance: Optimized for reduced drag and maximum high-RPM efficiency in 125cc race applications.
• Complete Assembly: Kit includes the forged piston, high-performance ring, wrist pin, and clips.

Expert Pro-Tip: In the 125cc class, the piston is a high-wear item that requires regular intervals of replacement to prevent cylinder damage. Size A is the correct choice for a new cylinder or a cylinder that has just been replated. When installing the 8220DA, always check your ring end gap and replace your small-end wrist pin bearing. Using a fresh top-end gasket kit is essential for maintaining the primary compression needed for that signature 2-stroke snap.

Fitment List

Brand	Models	Year Range
KTM	125 SX / XC / XC-W / EXC / Six Days	2001-2022
Husqvarna	TC125 / TE125 / TX 125 / Heritage	2014-2025
Beta	125 RR / Race Edition / X-Pro	2018-2026
Gas Gas	MC 125	2021-2025
Husaberg	TE125	2012-2014

Frequently Asked Questions

Q: Is this a Standard Size piston?
A: Yes, this is the 53.95mm piston designed for the standard 54.00mm bore. It is the ideal choice for new cylinders or those in excellent condition with no measurable wear.

Q: Why choose a forged piston for a 125cc bike?
A: 125cc engines operate at very high RPMs. Forged pistons are much stronger than cast pistons, offering significantly better resistance to the mechanical stresses that can cause cast pistons to shatter or crack under racing conditions.

Q: Does this kit include the wrist pin bearing?
A: No, the kit includes the piston, ring, pin, and clips. We highly recommend purchasing a new high-quality small-end bearing separately for every top-end refresh.

Recommended Pairings

• Top End Gasket Kit: Essential for a professional, leak-free engine rebuild with a fresh set of gaskets.
• High-Performance 2-Stroke Oil: Premium synthetic protection specifically formulated for high-performance 125cc 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.