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Wiseco  |  SKU: 56-W4951.7600.WI
New arrival

PISTON KIT 76.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 40078M07600 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.

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Regular price
£208.73

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Description

This Wiseco forged piston kit is designed for Yamaha YFM250RX (2008–2013) and XT250 (2013–2019) models. It features a 2.00mm oversize bore, bringing the actual bore to 76.00mm and increasing displacement to 263cc. Engineered for durability and performance, it includes a moly-coated skirt for reduced friction and improved wear resistance. The kit is suitable for high-performance applications, offering enhanced strength and fatigue resistance compared to cast pistons.

Features

  • Forged piston construction for enhanced strength and durability
  • Moly-coated piston skirt to reduce friction and improve wear resistance
  • Direct OEM replacement
  • Easy to install; professional installation recommended if unsure

Specifications

  • Displacement: 263cc
  • Bore (Standard): 74.00mm
  • Bore (Actual): 76.00mm
  • Oversize: 2.00mm
  • Stroke: 58.00mm
  • Compression Ratio (Actual): 9.5:1
  • Skirt Coating: Moly

Cross-Reference OEM Part Numbers

  • 40078M07600
  • 2992XG (76.00mm Ring Set)
  • CW17 (17mm Round Wire Locks – Set of Two)
  • S688 (Piston Pin 17 x 42mm Non-Chromed TW)

Vehicle Fitments

  • YFM250RX (2008–2013)
  • XT250 (2013–2019)