WISECO 74mm PISTON KIT YAMAHA YFM250R RAPTOR 08-13, XT250 13-18

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

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.