PISTON KIT 99-08 TRX XR 85.00, FORGED WOSSNER 8702DB 400
Wossner forged piston kit with an 85.01mm 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, elliptical design for uniform bearing surface under heat expansion, and increased compression ratio for improved engine performance. Specifications include a bore of 85.01mm (84.94mm actual), display 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 8702DB, Lock CW20, Pin WP052, Ring Set 850XSY, and Rod P4021.
- SKU
- 56-W4628.B.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wössner Forged Piston Kit 85.01mm for Honda TRX400
This Wössner forged piston kit is engineered for high-performance applications, featuring an 85.01mm bore. Manufactured in Germany, it utilizes advanced forged construction to significantly enhance strength, heat transfer, and overall durability. The piston's innovative elliptical design promotes uniform bearing surface distribution, effectively reducing localized pressure and preventing piston collapse under extreme operating conditions. This results in a noticeable increase in the engine's compression ratio for improved performance.
Key Features:
- Forged Construction: Provides superior strength and long-lasting durability.
- Optimized Heat Transfer: Enhances efficient heat management to cylinder walls.
- Elliptical Design: Ensures even bearing surface distribution, even under thermal expansion.
- Increased Compression Ratio: Boosts engine performance with a 12.50:1 ratio compared to OEM 10.00:1.
- Premium Quality: Manufactured in Germany for precision and reliability.
Specifications:
- Actual Bore: 84.94mm
- Nominal Bore: 85.01mm
- Displacement: 397 cm³
- Stroke: 70.00mm
- Piston Clearance: 0.06mm
- Wössner Compression Ratio: 12.50:1
- Dome Volume: +8.40 cm³
- Compression Height: 26.20mm
Included Components:
- Wössner Piston: 8702DB
- Lock: CW20
- Pin: WP052
- Ring Set: 850XSY
- Rod: P4021
