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Ksport

Dualcomp Rear Big Brake Kit

$3,176.80 $3,017.44 Save $159.36

SKU: BKSB140-435SO

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 rear 4-piston caliper system designed for Subaru Impreza STI models from 2008-2014. This kit features a dual caliper setup where two pistons are dedicated to the foot brake and two are for the handbrake, each operating independently. It includes lightweight two-piece rotors and is a complete bolt-on system.

The kit comes with SC5 Street NAOC Ceramic brake pads, which offer reduced dust and noise compared to race pads. D.O.T compliant stainless-steel braided brake lines are standard, providing improved pedal response and feel. You can choose between slotted or cross-drilled rotors, with slotted recommended for track use and cross-drilled for daily driven vehicles. Ksport Big Brake kits are built to order and typically require 4-6 weeks for production and delivery.
Show original supplier description
The Ksport Dualcomp Big Brake Kit is engineered as a high-performance rear braking system for Subaru Impreza STI models, specifically from the 2008-2014 model years. This innovative kit features a unique Dualcomp system, utilizing a single 4-pot caliper where two pistons function for the primary foot brake and the other two independently operate the handbrake. This design is particularly suited for drifting and rally racing applications. Constructed with lightweight, two-piece rotors, this kit offers significant weight savings compared to OEM components. The calipers are mounted via CNC-machined Carbon Steel caliper brackets, ensuring a direct bolt-on fitment to the original caliper bracket locations. The system includes SC5 Street NAOC Ceramic brake pads, designed to provide optimal braking performance for street use and occasional track days while significantly reducing brake dust and noise. For enhanced pedal feel and response, D.O.T compliant stainless-steel braided brake lines replace stock rubber lines, preventing expansion under pressure. Customization options are available for the rotors, with a choice between slotted and cross-drilled designs. Cross-drilled rotors are recommended for daily driven vehicles due to their superior cooling, while slotted rotors are suggested for more aggressive track use. The handbrake caliper is finished with a polished Titanium cylinder and lever for both aesthetic appeal and functional control. Ksport offers a wide array of caliper color options, including standard painted finishes and premium high-polish or custom anodized colors. Please note that Ksport Big Brake kits are built to order. Production and delivery times typically range from 4-6 weeks. It is essential to confirm vehicle fitment using the search bar or by contacting customer support, as incorrect fitment can lead to return shipping costs and restocking fees unless an error was made by the sales team in recommending the part.

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 NumberBKSB140-435SO
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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