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Ksport

Supercomp 356mm Big Brake Kit, Rear

$3,207.60 $3,047.61 Save $159.99

SKU: BKSB050-447CO

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Ksport Supercomp Big Brake Kit is a rear brake system designed for the Subaru Impreza STI 1993-1998. It features a 4-piston caliper and a 356mm diameter, 32mm width rotor. The kit includes calipers, rotors, pads, brake lines, and all necessary hardware for a bolt-on installation.
Show original supplier description
The Ksport Supercomp Big Brake Kit is engineered to provide superior stopping power for your Subaru Impreza STI 1993-1998. This rear brake system features a Super 8 Pot caliper and a 356mm diameter, 32mm wide rotor, available with a drilled or slotted design and a floating rotor type. Each caliper is CNC machined from aircraft-quality billet aluminum, resulting in a lightweight yet incredibly strong component. The opposed-piston caliper design enhances pad grip and reduces uneven wear compared to OEM designs. It also features aluminum pistons for corrosion resistance and improved heat management, along with heavy-duty seals for high-temperature performance. The kit includes stainless steel brake lines to prevent expansion under pressure. The two-piece rotor assembly, combined with an aluminum center, reduces rotational mass for quicker braking response and shorter stopping distances. Ksport utilizes a unique slot design on the rotor to minimize braking noise and efficiently expel heat, gas, and pad debris. Rotors are heat-treated and balanced for optimal performance. For street use, SC5 Street pads with a ceramic compound are recommended, while RC1 Race Pads are suggested for track applications. This kit comes with a standard 12-month manufacturer warranty covering defects. Note that free shipping applies to orders over $600, but oversized items may be excluded.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKsport
Part NumberBKSB050-447CO
CategoryBrakes
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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