Ksport

Aluminum Caliper

$2,084.78

SKU: BKBM011-433SO

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

Description

Each caliper is precision-machined from a single billet of aircraft-grade aluminum, ensuring lightweight construction, exceptional strength, and resistance to corrosion. Aluminum pistons are utilized for improved heat management and reliable performance. This kit features two-piece slotted rotors, offering a balance of light weight, fade-free performance, and effective grip suitable for both track and daily driving. The calipers themselves boast an opposed piston design, which enhances pad wear and increases caliper rigidity compared to OEM components. For the rear Procomp systems, lightweight 4-piston aluminum calipers are standard in 13" and 14" kits, providing a substantial upgrade over stock. All Ksport Big Brake kits include CNC-machined carbon steel caliper brackets that facilitate direct bolt-on installation to your OEM caliper bracket locations. Included with the kit are SC5 Street Pads, formulated with NAOC Ceramic material for optimal braking performance in street and occasional track use. These pads offer a significant reduction in brake dust (50% or more compared to race pads), along with reduced noise and rotor wear, operating effectively between 194°F and 1022°F. Furthermore, DOT-compliant stainless-steel braided brake lines are standard, preventing line expansion under pressure for quicker pedal response and a firmer pedal feel. This specific kit is designed for the BMW M3 models from 1982-1992. Please note that Ksport Big Brake kits are built to order, and production and delivery typically take 4-6 weeks.

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 NumberBKBM011-433SO
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