PISTON KIT 99-08 TRX XR 86.50, FORGED WOSSNER 8702D150 400
Wossner forged piston kit with an 86.05mm bore. Manufactured in Germany, this high-performance piston enhances strength, heat transfer, and durability. The elliptical design ensures uniform bearing surface distribution, reducing localized pressure and preventing piston collapse. Features include forged construction for superior strength and durability, optimized heat transfer to cylinder walls, an elliptical design for uniform bearing surface under heat expansion, and increased compression ratio for improved engine performance. Specifications include a bore of 86.05mm (86.44mm actual), displacement of 397 cm³, stroke of 70.00mm, clearance of 0.06mm, Wossner compression ratio of 12.50:1, OEM compression ratio of 10.00:1, dome volume of +8.40 cm³, and compression height of 26.20mm. Cross-reference OEM part numbers include Wossner Piston 8702D150, Lock CW20, Pin WP052, Ring Set 865XSY, and Rod P4021.
- SKU
- 56-W4628_150.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner Forged Piston Kit 86.05mm Bore
Upgrade your ATV's performance with this high-quality Wossner forged piston kit. Engineered in Germany, this piston is designed to significantly enhance your engine's strength, heat transfer capabilities, and overall durability. The advanced elliptical design ensures a uniform bearing surface, even under extreme heat expansion, effectively distributing pressure and preventing premature wear or piston collapse.
Key Features:
- Superior forged construction for exceptional strength and longevity.
- Optimized for efficient heat transfer directly to cylinder walls.
- Innovative elliptical design promotes even bearing surface distribution under dynamic conditions.
- Increases the compression ratio for noticeable improvements in engine performance.
- Proudly manufactured in Germany to exacting standards.
Specifications:
- Bore Size: 86.05mm (with an actual measured bore of 86.44mm)
- Displacement: 397 cm³
- Stroke: 70.00mm
- Piston Clearance: 0.06mm
- Wossner Compression Ratio: 12.50:1
- OEM Compression Ratio: 10.00:1
- Dome Volume: +8.40 cm³
- Compression Height: 26.20mm
Included Components:
- Wossner Piston: 8702D150
- Lock Ring: CW20
- Piston Pin: WP052
- Ring Set: 865XSY
- Wossner Rod: P4021
