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Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco 4 Stroke Forged Series Piston Kit, 55.00 MM Bore, 11:1 CR

$177.95 $166.59 Save $11.36

SKU: W00C 40068M05500

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Wiseco 40068M05500 is an engine piston kit designed for 2011-2013 Yamaha YFM125 Raptor models. It features a 11:1 compression ratio and is constructed from 4032 high-silicon aluminum alloy for strength and dependability.

This kit includes a piston with a 55.00mm bore diameter and 54.95mm piston diameter, along with a ring set (#2165XE), wrist pin (#S571), and circlips (#CW15). The piston has an ArmorGlide skirt coating and an oversize of 1.00mm. Oversize pistons require cylinder sleeving.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandWiseco
Part NumberW00C 40068M05500

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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