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Engines and Components Pistons and Piston Rings

CP Pistons

CP Pistons 02-08 Honda CRF250R 13.0:1 78mm STD Bore x 52.2mm Stroke (249cc) Piston Kit

$334.75 $318.02 Save $16.73

SKU: C00A M2042C

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The CP Pistons M2042C is a high-performance forged piston kit for Honda CRF250R dirt bikes (2004-2008). It features an "X" style forging for strength, durability, and reduced weight, oversized valve reliefs, double forced pin oilers, and is fully CNC machined. This piston kit requires deglazing the cylinder, uses a 1mm smaller pin, and a 2mm longer rod. It is part of the "Project X Platinum Kit" which includes a redesigned piston and rod combo for increased power and durability.

Fitment

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Specifications

BrandCP Pistons
Part NumberC00A M2042C

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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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