Sale

Ksport

Supercomp Big Brake Kit Rear 400mm Rotor Orange Calipers

$6,796.90 $5,870.29 Save $926.61

SKU: BKAU420-863CO

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 provide superior stopping power for your Audi 4M Q7. This system integrates advanced brake technology to significantly reduce brake fade and continually cool the brake pads during operation. The SuperComp caliper, forged from aircraft-quality billet aluminum, is extremely lightweight and features a differential bore configuration with larger pistons than Ksport's ProComp calipers. It includes protection grooves, aluminum pistons, high-temperature seals, titanium brake pad retainer clips, and stainless steel 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 requires four brake pads. This kit features a 2-piece floating disc assembly, which minimizes rotating and unsprung weight, and prevents thermal stresses from causing disc warping or surface cupping. The rotors come with a unique slot design that reduces braking noise and expels gas and pad debris effectively. For daily driven vehicles, cross-drilled rotors are recommended as they tend to run cooler than slotted rotors. Ksport offers both street and race pads, with the SC5 Street Pads being standard. These ceramic pads offer optimal performance between 194°F – 1022°F and reduce dust by over 50% compared to race pads. This product is made to order, and an estimated delivery time will be provided after the order is placed. Customization options include various caliper colors, rotor styles (cross-drilled or slotted), and optional upgrades for center bells and race pads. Please note that all Ksport Big Brake Kits are made-to-order and are non-refundable.

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 NumberBKAU420-863CO
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