Engines and Components Pistons and Piston Rings

CP Pistons

CP Piston BRS SB Chrysler Bore 4.070 Stroke 4.000 Rod 6.123 Set Of 8 (MTO Non-Cancel)

$1,016.40

SKU: C00A BM4240-070

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Description

Part #: BM4240-070

MIA's Description

Set of 8 forged pistons from CP Pistons for high-performance Chrysler Small Block (SB) engines. These pistons feature a 4.070-inch bore, a 4.000-inch stroke, and are designed for use with 6.123-inch connecting rods. They are made to order from 2618 forgings, known for robust construction to withstand high pressures and temperatures in performance applications. Orders are non-cancelable once placed. The set includes 1.5mm steel gas nitride top rings, 1.5mm Napier second rings, 3.0mm oil rings, and .984 x 2.500 pins with .150 wall standard. Not CARB approved; cannot be shipped to California.

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Specifications

BrandCP Pistons
Part NumberC00A BM4240-070

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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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