Ksport

Big Brake Kit with Floating Rotors

$3,047.62

SKU: BKBM120-447SO

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

Description

Building upon the foundation of the Procomp kit, the Supercomp version boasts significantly larger calipers, rotors, and brake pads, along with an increased number of pistons. All calipers are meticulously crafted from a single billet of aircraft-grade aluminum, ensuring lightweight strength and corrosion resistance, and feature aluminum pistons for enhanced heat management. Standard on all Supercomp systems are floating two-piece rotors. This design allows the outer section to shift slightly, improving self-centering within the caliper. This results in reduced brake drag and more consistent pad application for boosted performance. The kit also includes D.O.T. compliant stainless-steel braided brake lines, which eliminate line expansion under pressure, leading to quicker pedal response and a firmer pedal feel compared to stock rubber lines. Included with the kit are SC5 Street Pads, designed for optimal braking performance in street conditions and occasional track use. These pads offer a significant reduction in brake dust and noise while minimizing rotor wear, with an optimal operating temperature range of 194°F - 1022°F. Rotor options include slotted or cross-drilled, with cross-drilled recommended for daily drivers due to cooler operation, and slotted for track-focused vehicles. This big brake kit is specifically designed for the 1999-2003 BMW M5 Base model. Ksport Big Brake kits are built to order, with an estimated production and delivery time of 4-6 weeks. If fitment issues arise, Fitment Industries offers support, and in cases where their sales team confirms fitment and the product does not fit, they will accept returns with no restocking fees, provided the item remains in like-new condition.

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 NumberBKBM120-447SO
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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