Sale

Ksport

SuperComp Rear Big Brake Kit 356mm

$3,207.60 $3,047.61 Save $159.99

SKU: BKBM135-447CO

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 superior stopping power for your BMW E8X 1M Coupe. This comprehensive kit integrates advanced brake technology to significantly reduce brake fade and continuously cool the brake pad surface during demanding braking scenarios. The SuperComp caliper, forged from aircraft-quality billet aluminum, features a differential bore configuration with larger pistons than Ksport's ProComp calipers. It weighs just over 7 lbs and includes features like machined protection grooves, 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 over OEM systems, while the stainless-steel braided brake lines prevent expansion under pressure, leading to a firmer pedal feel and quicker response. This kit includes a 2-piece floating disc assembly, which reduces both rotating and unsprung weight. The floating disc design mitigates thermal stresses that can cause warping or cupping of the braking surface. The rotors feature a unique slot design that minimizes braking noise and expels gas and pad debris more effectively than conventional designs. Ksport offers both cross-drilled rotors, recommended for daily driven vehicles due to better cooling, and slotted rotors, recommended for track use. Standard equipment includes Ksport SC5 Street Pads, which are ceramic pads designed for optimal performance in street and occasional track conditions with optimal operating temperatures between 194°F – 1022°F. These pads offer reduced dust (by 50% or more compared to race pads), noise, and rotor wear. For extreme track conditions, optional Ksport RC5 Race Pads (carbon metallic) are available, with optimal operating temperatures between 482°F – 1472°F, though they are not recommended for street use. The brake lines are D.O.T compliant stainless-steel braided lines. Caliper colors can be customized from a range of options, with some finishes incurring additional charges. This product is made to order and is non-refundable once the order is placed. This kit is specifically designed for the BMW 1 Series E82/E88 (2008-2013) 1M model with the N54 3.0L engine. It is a rear big brake kit.

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 NumberBKBM135-447CO
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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