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PISTON KIT 99-08 TRX XR 85.00, FORGED WOSSNER 8702DB 400
£186.49 GBP
Taxes included.
Wössner forged piston kit with an 85.01mm bore, designed for Honda TRX400EX and TRX400X ATVs. 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
- Forged construction for superior strength and durability
- Optimized heat transfer to cylinder walls
- Elliptical design for uniform bearing surface under heat expansion
- Increased compression ratio for improved engine performance
- Made in Germany
Specifications
- Bore: 85.01mm (84.94mm actual)
- Display: 397 cm³
- Stroke: 70.00mm
- Clearance: 0.06mm
- Wössner Compression Ratio: 12.50:1
- OEM Compression Ratio: 10.00:1
- Dome Volume: +8.40 cm³
- Compression Height: 26.20mm
Cross-Reference OEM Part Numbers
- Wössner Piston: 8702DB
- Lock: CW20
- Pin: WP052
- Ring Set: 850XSY
- Rod: P4021
Vehicle Fitments
- Honda TRX400EX (1999-2008)
- Honda TRX400X (2009-2012)