Engines and Components Pistons and Piston Rings

CP Pistons

CP Piston Bullet Race Series Small Block Chevy 4.030 Bore 3.750 Stroke 6.000 Rod Set Of 8

$1,016.40

SKU: C00A BC1042-030

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

Bullet series pistons for Small Block Chevy 383 engines. 4.030 bore, 3.750 stroke, 6.000 rod. 1.125 compression height, 5.1cc dome. Made in USA from 2618 forgings. Fits all 23° cylinder heads. Includes 8 pistons and rings (1.5mm steel gas nitride top, 1.5mm Napier second, 3.0mm oil), and .927 x 2.500 pins (.150 wall standard). 12.3:1 compression ratio with 64cc heads. For normally aspirated applications.
Show original supplier description

Part #: BC1042-030

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

Available on iOS & Android

Specifications

BrandCP Pistons
Part NumberC00A BC1042-030

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

Returns & Fitment

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.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy