PISTON KIT XR400 TRX400 89.00, FORGED WOSSNER 8604D400
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PISTON KIT XR400 TRX400 89.00, FORGED WOSSNER 8604D400 is available to order. Please contact us to confirm availability and lead time.
Pickup currently unavailable at Braydon Trailers HQ
BTP – Your Trusted Trailer & ATV Specialists in the South West
Authorised dealer for top brands, including CFMOTO, Brian James, Debon, Cheval Liberté, Tiki, Woodford, Erde, and more.
Description
Description
Wössner forged piston kit with an 89mm bore, designed for Honda XR400R motorcycles and TRX400 series 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: 89mm (88.94mm actual)
- Display: 397 cm³
- Stroke: 70.00mm
- Clearance: 0.06mm
- Wössner Compression Ratio: 11.00:1
- OEM Compression Ratio: 10.00:1
- Dome Volume: +3.20 cm³
- Compression Height: 26.20mm
Cross-Reference OEM Part Numbers
- Wössner Piston: 8604D400
- Lock: CW20
- Pin: WP052
- Ring Set: 890XSY
- Rod: P4021
Vehicle Fitments
- Honda XR400R (1996-2004)
- Honda TRX400EX (1999-2008)
- Honda TRX400X (2009-2012)
