Brakes› Brake Systems And Components

Stoptech

12.19X1.25 BI-SLOT RT

$303.96

SKU: S00M 31.H3B.0E72.CT

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In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The StopTech 31.H3B.0E72.CT.87 is a high-performance replacement brake rotor ring designed specifically for ND Miata big brake kit (BBK) applications. This right-side AeroRotor features a 309x32mm bi-slot design that enhances heat dissipation and reduces brake fade during aggressive driving conditions. It has a two-piece construction that allows rotor ring replacement without replacing the hat, reducing service costs. Includes race hardware with conical washers for 2mm additional float over street hardware and is compatible with StopTech C43 CBK brake kits for ND Miata platforms. Precision-engineered from high-grade materials for durability and consistent performance.

Fitment

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Specifications

BrandStoptech
Part NumberS00M 31.H3B.0E72.CT

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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