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Ksport

Supercomp Big Brake Kit

$4,827.90 $4,586.51 Save $241.39

SKU: BKMZ161-961CO

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Ksport Supercomp 8 Piston 400mm Front Big Brake Kit is an extreme brake upgrade designed for the Mazda 323 BG GTR model from 1989-1994. It features larger calipers, rotors, and brake pads compared to the Procomp kit, along with increased pistons and standard full-floating rotors for better self-centering. The calipers are constructed from a one-piece billet of aircraft-grade aluminum for strength and corrosion resistance, and feature aluminum pistons for heat resistance. This kit is designed as a bolt-on upgrade with minimal vehicle modifications required.
Show original supplier description
The Ksport Supercomp Big Brake Kit represents the pinnacle of braking upgrades, engineered to deliver unparalleled stopping power for your Mazda 323 from 1989 to 1994. This kit is designed as a sophisticated, direct bolt-on solution, meaning no vehicle modifications are necessary for installation. It surpasses the Procomp kit with larger calipers, rotors, and brake pads, augmented by increased piston count and standard full-floating rotors that enhance self-centering within the caliper for optimal performance. Constructed from a solid billet of aircraft-grade aluminum, the 1-piece calipers are exceptionally lightweight, strong, and resistant to corrosion. They feature aluminum pistons for superior heat resistance and durability. Ksport includes CNC-machined Carbon Steel caliper brackets that precisely align with your vehicle's OEM caliper mounting points, ensuring a straightforward installation. The kit utilizes a floating two-piece rotor design, which allows for slight necessary movement, reducing brake drag and improving pad application. Included are NAOC Ceramic "SC5 Street" pads, optimized for street use and occasional track days, offering a significant reduction in brake dust and noise while maintaining performance between 194°F and 1022°F. The kit also comes standard with D.O.T. compliant stainless-steel braided brake lines, which eliminate line expansion under pressure for a quicker pedal response and a firmer pedal feel. Further customization is available with your choice of cross-drilled or slotted rotors. Cross-drilled rotors are recommended for daily driving due to their superior cooling, while slotted rotors are better suited for track-focused applications. Ksport Big Brake kits are built to order, with an estimated production and delivery time of 4-6 weeks. If an issue arises due to an error on our part, including situations where our sales team has recommended an incompatible setup, we will work with you to make things right, potentially waiving restocking or return shipping costs if the item is still 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 NumberBKMZ161-961CO
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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