PISTON KIT 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 4951M07400 YAMAHA ATV
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 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 4951M07400 YAMAHA ATV 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
The Wiseco forged piston kit with a 74.00mm bore is designed as a direct replacement for Yamaha YFM250R Raptor (2008–2013), YFM250RX (2008–2013), and XT250 (2013–2019) models. Built in the USA, this high-performance piston is forged for strength and durability, with a moly skirt coating to reduce friction and wear.
Features
- Forged piston designed for high strength and resistance to impact and fatigue
- Moly skirt coating for reduced friction and improved wear resistance
- Manufactured in-house with full control over the forging and machining process
- Direct OEM replacement
- Made in the USA
Specifications
- Displacement: 249 cc
- Bore (Standard): 74.00 mm
- Actual Bore Diameter: 73.95 mm
- Stroke: 58.00 mm
- Compression Ratio (Actual): 9.5:1
- Skirt Coating: Moly
- Bore Oversize: STD
Cross-Reference OEM Part Numbers
- Piston: 4951M07400
- Part No.: 56-W4951.WI
- Ring Set: 2913XA
- Locks: CW17 (17mm Round Wire Locks - Set of Two)
- Pin: S688 (17 x 42 mm Non-Chromed TW)
Vehicle Fitments
- Yamaha YFM250R Raptor 2008–2013
- Yamaha YFM250RX 2008–2013
- Yamaha XT250 2013–2019
