Sale

Ksport

Supercomp Big Brake Kit with Standard Full-Floating Rotors

$4,827.90 $4,586.51 Save $241.39

SKU: BKBM051-961SO

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 represents the pinnacle of brake upgrades, engineered to deliver exceptional stopping power for your BMW M3 (1999-2005). Designed as a sophisticated, bolt-on system, it requires no permanent vehicle modifications for installation. This kit builds upon the performance of Ksport's Procomp line, incorporating larger calipers, rotors, and brake pads, along with increased piston count and standard full-floating rotors for enhanced self-centering and reduced drag. The calipers are precision-machined from a single billet of aerospace-quality aluminum, ensuring lightweight construction, unparalleled strength, and resistance to corrosion. They feature aluminum pistons, which offer superior heat dissipation compared to traditional materials. The kit includes CNC-machined carbon steel caliper brackets that allow for direct bolt-up to the OEM caliper bracket locations, accommodating the larger Ksport calipers. Customization is a key feature, with options for slotted or cross-drilled 400mm two-piece rotors. Cross-drilled rotors are recommended for daily drivers as they run cooler, while slotted rotors are better suited for track use. The kit comes standard with SC5 Street Pads, designed for optimal performance in street and occasional track conditions, offering reduced dust, noise, and rotor wear. D.O.T. compliant stainless-steel braided brake lines are also included, providing a firmer pedal feel and quicker response by preventing line expansion under pressure. Calipers are available in various standard and premium finishes, with extensive custom color options. Ksport Big Brake kits are built to order, with an estimated production and delivery time of 4-6 weeks. Fitment is confirmed for 1999-2005 BMW M3 Base models, though a full vehicle fitment list is available via search. Ksport advises confirming fitment with their team to reduce the risk of ordering an incompatible product; if fitment is confirmed by their sales team and the product does not fit, they will accept returns with no restocking fees, provided the item is 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

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 NumberBKBM051-961SO
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