Sale

Ksport

Supercomp Rear Big Brake Kit

$3,207.60 $2,770.56 Save $437.04

SKU: BKBM050-447CO

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Ksport Supercomp Rear Big Brake Kit is engineered to deliver ultimate stopping power for your BMW E46 M3. This advanced braking system integrates new technology to significantly reduce brake fade and continuously cool the brake pads during operation. The SuperComp caliper is a standout feature, crafted from aircraft-quality billet aluminum. It boasts a differential bore configuration with larger pistons compared to Ksport's ProComp calipers, weighing just over 7 lbs each. Standard features include aluminum pistons, high-temperature seals, titanium brake pad retainer clips, and stainless-steel brake pad wear plates. The opposed piston design enhances pad wear and caliper rigidity, while stainless-steel brake lines prevent expansion under pressure. Each caliper in the SuperComp series utilizes four brake pads. This kit includes a 2-piece floating disc assembly, which reduces both rotating and unsprung weight. The floating disc design also mitigates thermal stresses that can cause warping or cupping of the braking surface under extreme heat. Ksport offers rotors in both cross-drilled and slotted designs. Cross-drilled rotors are recommended for daily driven vehicles as they tend to run cooler, while slotted rotors are better suited for track use. This specific kit includes 356mm x 32mm cross-drilled rotors. Optional upgrades include Ksport SC5 Street Pads, which are designed for optimal street and occasional track performance, and Ksport RC5 Race Pads, made from carbon metallic for extreme track conditions. The kit is made to order, with estimated delivery times provided after order submission. Customization options for caliper color and brake pad types are available.

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 NumberBKBM050-447CO
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.

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