Skip to product information
PISTON KIT 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 4951M07400 YAMAHA ATV
  • PISTON KIT 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 4951M07400 YAMAHA ATV
  • PISTON KIT 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 4951M07400 YAMAHA ATV
Piston Kit 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, Wiseco 4951M07400 Yamaha ATV

Piston Kit 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, Wiseco 4951M07400 Yamaha ATV

£211.76 GBP
Taxes included. Shipping calculated at checkout.

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