Brakes Brake Systems And Components

Stainless Steel Brakes

A1257-3 W/BK CAL

$1,760.69

SKU: S07H A127-3BK

Out of Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This Rear Drum to Disc Brake Conversion Kit in black is designed for 1978-1988 GM 'G' body vehicles. It offers up to 30% more braking power and is a direct bolt-on installation on stock axles. The kit includes single-piston cast iron, zinc-plated calipers with built-in parking brakes, and 11.25-inch vented rotors. It is compatible with most 15-inch rims and is not suitable for GNX models; the vehicle must be at stock ride height.

Fitment

Fitment Guaranteed

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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

BrandStainless Steel Brakes
Part NumberS07H A127-3BK

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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