Drivetrain› Differentials and Rear-End Components

Richmond Gear/Motive Gear

Excel Ring & Pinion Gear Set GM 12Bolt 3.55 Ratio

$489.66

SKU: R01O 12BC355

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Richmond Gear 12BC355 is a ring and pinion gear set designed for GM 12-Bolt axles. This set features a 3.55 gear ratio, a 30-spline pinion, and an 8.875-inch ring gear diameter. The Excel drivetrain products are manufactured to precise specifications and utilize the latest heat treatment technology.

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

BrandRichmond Gear/Motive Gear
Part NumberR01O 12BC355

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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