Brakes Brake Systems And Components

Ksport

4-Piston Caliper and 356mm x 32mm Rotor Big Brake Kit

$2,715.69

SKU: BKBM340-443CO

In Stock
In Stock
Ships by Sep 1
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

This kit features a 4-piston caliper type and 356mm x 32mm rotors. The calipers are constructed from a solid billet of aircraft-grade aluminum for lightweight strength and corrosion resistance, with aluminum pistons for better heat resistance. The two-piece rotor design offers lightweight, fade-free performance and effective grip.
Show original supplier description
This kit is specifically designed for the rear axle and features a 4-piston caliper type, utilizing 356mm x 32mm two-piece rotors. The calipers are constructed from a solid billet of aerospace-quality aluminum, offering a lightweight yet exceptionally strong and corrosion-resistant one-piece design. This construction eliminates weak spots that can lead to fracturing or warpage over time. The aluminum pistons are protected with heavy-duty seals capable of handling racetrack temperatures, ensuring smooth and even brake pad operation without drag, and uncompromised performance due to corrosion. The two-piece rotor design contributes to lightweight, fade-free performance and effective grip on the racetrack, while also providing comfortable operation for daily driving. The lightweight center sections, crafted from 6061-T6 aircraft-grade aluminum, reduce rotational mass for quicker stopping response and act as effective heat sinks. Each rotor is heat-treated and balanced before shipment. Cross-drilled rotors are recommended for daily driven vehicles for cooler operation, while slotted rotors are recommended for more track-focused use. Included in the standard kit are replacement calipers, rotors, SC5 Street Pads, stainless-steel braided brake lines, and related hardware. D.O.T. compliant stainless-steel brake lines prevent hose expansion under pressure, offering a quicker pedal response and a firmer pedal feel compared to stock rubber lines. Options are available to upgrade to RCI Race Pads for extreme track conditions and to customize caliper colors, center bell materials, and rotor styles. This product is made to order and is non-refundable. This kit fits 2WD vehicles only.

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 NumberBKBM340-443CO
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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