Brakes› Brake Systems And Components

Ksport

DualComp 4-Piston Big Brake Kit

$3,017.44

SKU: BKSB120-435CO

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

Moderate — 2–4 hours

Overview

The Ksport DualComp Big Brake Kit is a performance brake upgrade designed for the 2005-2007 Subaru Impreza STI. This kit features a unique DualComp system with a 4-piston caliper where two pistons are dedicated to the foot brake and two to the handbrake, operating independently. It's a complete bolt-on system that includes calipers, floating brake discs, brake pads, and all necessary hardware for installation.
Show original supplier description
The Ksport DualComp Big Brake Kit offers a significant rear brake upgrade for the 2005-2007 Subaru Impreza STI, engineered for performance and racing applications. This innovative system utilizes a 4-piston caliper design with independent circuits for the foot brake and handbrake, ensuring optimized control and performance for drifting and rally driving. The kit includes everything needed for a direct bolt-on installation without requiring vehicle modifications. Key features include 330mm vented, 2-piece rotors with drilled surfaces and aluminum centers to reduce rotational mass and improve response. The opposed-piston caliper design enhances pad grip and minimizes uneven wear, while aluminum pistons offer corrosion resistance and lighter weight. The DualComp Big Brake Kit is compatible with 17-inch (432mm) wheels and requires no permanent modifications to your vehicle. The kit comes complete with calipers, floating brake discs, street-performance brake pads, and all required hardware for a straightforward installation. KSport backs this kit with their standard manufacturer's warranty.

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 NumberBKSB120-435CO
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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