WISECO PISTON KIT 76mm YAMAHA YFM250R RAPTOR 08-13, XT250 13-18, Comp 9.5:1

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)

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.