WOSSNER 8299DA Forged Piston Kit Standard Size A 58mm KTM Husqvarna Gas Gas 150

Elite Forged Performance for 150cc 2-Strokes

Keep your high-revving 150cc machine at the front of the pack with the WOSSNER 8299DA Piston Kit. This Standard Size A kit is the professional choice for the latest generation of KTM, Husqvarna, and Gas Gas 150cc engines. Forged from aerospace-grade aluminum alloy, Wossner pistons offer superior structural integrity and thermal resistance compared to cast alternatives. Whether you’re racing moto on an SX/MC or navigating technical trails on a TPI-equipped TE/XC-W, this kit from Moto-House MX ensures your top end delivers crisp, reliable power under the most demanding conditions.

The technical engineering of the 8299DA focuses on maximizing efficiency and engine life. It features a single-ring configuration designed to minimize friction and drag, allowing for lightning-fast RPM gains and improved throttle response. Every piston is treated with a permanent, high-quality skirt coating that significantly reduces "piston rock" and internal friction for a quieter, smoother-running engine. Optimized machining in the crown and skirt walls provides maximum lightness while maintaining the strength required for modern, high-output 2-strokes. Each kit includes the forged piston, racing ring, wrist pin, and clips for a complete, high-performance rebuild.

Top Features: WOSSNER 8299DA Piston Kit

• Forged Aerospace Alloy: Engineered for extreme durability and reduced thermal expansion in high-performance racing engines.
• Standard Size A (57.95mm): Precision-matched for original or freshly replated cylinders to maintain tight factory tolerances.
• Single-Ring Racing Setup: Reduced surface contact area lowers friction for faster revving and increased top-end power.
• Permanent Skirt Coating: Advanced dry-film lubricant prevents scuffing and reduces engine noise during high-heat cycles.
• Lightweight Precision: Machined to shed reciprocating mass, improving throttle snap without sacrificing structural strength.

Expert Pro-Tip

When rebuilding TPI (Transfer Port Injection) models, ensure your oil pump is primed and the fuel system is free of debris. Always verify your "X" dimension (piston deck height) to Wossner's specs to ensure optimal compression and clearance.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2025	Gas Gas	MC 150
2020-2024	Husqvarna	TE 150i / TE 150 (All Models)
2020-2022	KTM	150 EXC TPI / 150 XC-W TPI
2016-2022	KTM	150 SX
2017-2019	KTM	150 XC-W
2017-2019	Husqvarna	TE 150

Frequently Asked Questions

Q: Is this piston compatible with TPI (Fuel Injected) models?
A: Yes, the 8299DA is fully compatible with both carbureted and TPI/i-series fuel-injected 150cc engines.

Q: Why choose a Single-Ring piston for a 150cc bike?
A: Single-ring designs are standard for racing because they rev higher and faster due to decreased friction against the cylinder wall.

Q: Does this fit the 125cc models?
A: No, this is specifically sized for the 58.00mm bore of the 143cc/150cc engines.

Recommended Pairings: Top-End Gasket Kits, Small-End Wrist Pin Bearings, and High-Performance 2-Stroke Premix Oil.

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Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida.