Ksport

Supercomp 400mm x 36mm Rear Big Brake Kit

$5,018.20

SKU: BKMD091-863SO

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 Mercedes Benz W219 CLS55 and CLS63 AMG. This kit includes a substantial 400mm x 36mm slotted rotor and a massive Supercomp 8-piston caliper, designed for significant improvements in braking performance. The innovative design integrates new brake technology to substantially reduce brake fade and actively cools the brake pads during operation. The opposed piston caliper design enhances pad wear and caliper rigidity compared to OEM components, while stainless steel brake lines prevent expansion under pressure, leading to improved pedal feel and quicker response. The SuperComp systems feature a 2-piece floating disc assembly, which reduces both rotating and unsprung weight. This floating design also mitigates thermal stresses that can cause warping or cupping of the braking surface under extreme heat. The unique slot design on the rotors helps reduce braking noise and efficiently expels gas and pad debris. Ksport offers both cross-drilled rotors (recommended for daily driving as they run cooler) and slotted rotors (recommended for track use) to suit your driving needs. Standard equipment includes Ksport SC5 Street Pads, which are ceramic and offer optimal performance for street and occasional track use, while an optional carbon metallic RC5 Race Pad set is available for extreme track conditions. This Ksport Big Brake Kit is made to order and is non-refundable. Please verify fitment for your specific vehicle, as UroTuning does not list fitment vehicles for this item. A 12-month limited warranty covers manufacturer defects.

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

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

BrandKsport
Part NumberBKMD091-863SO
CategoryBrakes

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy