Engines and Components› Pistons and Piston Rings

CP Pistons

CP Top Ring

$15.25

SKU: C00A 1-N16-3937-0

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

Easy — 1–2 hours

Description

The CP-Carrillo 1-N16-3937-0 is a high-performance 1.2mm nitrided back cut top piston ring designed for serious engine builds requiring maximum ring seal and minimal blow-by. This precision-engineered component features a 3.937-inch bore diameter and is manufactured to meet the demanding requirements of high-RPM racing applications.

Key features include construction from high-strength ductile iron for durability, a plasma moly face for superior cylinder wall sealing and reduced friction, and gas nitriding for exceptional wear resistance. The back cut radial depth design minimizes parasitic drag and ring flutter at high RPM, while the 1.2mm thickness offers reduced friction compared to traditional rings.

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 1-N16-3937-0

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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