Sale

Ksport

Supercomp 421mm x 36mm Big Brake Kit

$6,098.40 $5,793.48 Save $304.92

SKU: BKPO030-971CO

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

Description

The Ksport Supercomp Big Brake Kit is engineered to provide superior stopping power for your Porsche 997 911 C4S. This front big brake system features substantial 421mm x 36mm rotors, integrating advanced brake technology to significantly reduce brake fade and ensure continuous cooling and refreshing of the brake pads during operation. The SuperComp caliper itself is a standout component, crafted from aircraft-quality billet aluminum for extreme lightweight performance. It boasts a differential bore configuration with pistons considerably larger than those found in ProComp calipers. Standard features include aluminum pistons, high-temperature seals, titanium brake pad retainer clips, and stainless-steel brake pad wear plates. The opposed piston caliper design optimizes pad wear and enhances caliper rigidity compared to OEM setups, while the stainless-steel brake lines maintain pedal feel by preventing expansion under pressure. Notably, due to the caliper's larger size in the SuperComp series, each caliper utilizes four brake pads. The kit includes a 2-piece floating disc assembly, which contributes to reducing both rotating and unsprung weight. This floating disc design effectively manages thermal stresses generated by extreme heat, preventing disc warping and braking surface cupping. The rotors feature a unique slot design that minimizes braking noise and efficiently expels gas and pad debris. Every rotor is heat-treated and balanced for peak performance. The product is offered with a choice of cross-drilled rotors, recommended for daily driven vehicles due to their cooler running characteristics, or slotted rotors, suited for more frequent track use. Customers can select between Ksport SC5 Street Pads, designed for optimal performance under street and occasional track conditions with reduced dust and noise, or Ksport RC5 Race Pads, which are carbon metallic and built for extreme track conditions. The kit is made to order, and an estimated time of arrival will be provided after order submission. This product comes with a 12-month limited warranty covering 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

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Specifications

BrandKsport
Part NumberBKPO030-971CO
CategoryBrakes

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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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