Brakes Brake Systems And Components

Stainless Steel Brakes

SPORT R1A155-4 W/POL CAL

$1,205.59

SKU: S07H A155-4P

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

Moderate — 2–4 hours

Description

The Stainless Steel Brakes A155-4P is a Sport R1 Plus Disc Brake Conversion Kit with polished calipers, designed for rear drum-to-disc conversion. Kit includes single-piston cast iron calipers with a built-in parking brake, 12.8-inch (some sources state 10.5-inch) vented rotors with turbo slotting and Xtra Life plating, brackets, pads, seals, bearings, splash shields, lines, and hardware. Uses standard off-the-shelf pads. Requires an axle with a 5 x 4-1/2" bolt pattern and 2-1/2" brake space.

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

BrandStainless Steel Brakes
Part NumberS07H A155-4P

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.

View Full Return Policy