PISTON KIT 05-07 YZF250 77.00, WOSSNER 8612DB 2-RING
Available from Supplier — dispatched directly
This item is dispatched directly to you by our supplier. Supplier stock is separate from stock held at BTP.
Looking to purchase?
Call or WhatsApp us on 01793 239039
or email Office@btpsouthwest.uk
Our team is on hand to help with availability, advice and finance options.
PISTON KIT 05-07 YZF250 77.00, WOSSNER 8612DB 2-RING 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
Wossner forged piston kit with a 77.01mm bore, designed for Yamaha WR250F, YZ250F, and Gas Gas EC250F models. This two-ring piston is engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision.
Features
- Forged piston for superior strength and design
- Two-ring design for performance and durability
- Optimized heat transfer to cylinder walls
- Elliptical design for uniform bearing surface and even thrust load distribution
- Manufactured in Germany
Specifications
- Bore: 77.01mm (+0.01mm oversize)
- Standard size piston (PN# 8612DB)
- Lock Part Number: CW16
- Pin Part Number: WP059
- Ring Set Part Number: 770XAS
- Displacement: 249 cm³
- Stroke: 53.6mm
- Clearance: 0.04mm
- Wossner Compression Ratio: OEM
- OEM Compression Ratio: 12.50:1
- Dome Volume: -2.80 cm³
- Compression Height: 22.20mm
Cross-Reference OEM Part Numbers
- Not provided
Vehicle Fitments
- Yamaha WR250F (2005-2007)
- Yamaha YZ250F (2005-2007)
- Gas Gas EC250F (2010-2015)
