Ksport

Dualcomp Rear 4-Piston 356mm Big Brake Kit

$3,621.20

SKU: BKSB040-445SO

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

Description

The Ksport Dualcomp 4 Piston Rear Big Brake Kit is engineered for enhanced braking performance, specifically for Subaru Impreza WRX models (2002-2007). This kit introduces a unique Dualcomp system, featuring a single 4-piston caliper where two pistons are dedicated to the foot brake and the other two operate the handbrake independently. This innovative design offers superior control and response. Constructed with a focus on performance and durability, the kit includes 356mm slotted, two-piece rotors designed to be significantly lighter than OEM components. The calipers themselves are CNC machined from carbon steel, ensuring a direct bolt-on fit to the OEM caliper bracket location. The system also incorporates a polished titanium handbrake cylinder and lever for an enhanced feel and aesthetic. Ksport offers customization options for caliper colors, including standard shades like orange, red, black, and yellow, as well as premium finishes in silver, gold, titanium, and custom color options, providing nearly limitless aesthetic choices. The rotors can be specified as either slotted or cross-drilled, with slotted recommended for track use and cross-drilled for daily drivers due to cooler operating temperatures. This brake kit is also Formula Drift legal. Please note that Ksport Big Brake kits are built to order and typically require a 4-6 week production and delivery lead time.

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 NumberBKSB040-445SO
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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