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Ksport

SuperComp Big Brake Kit

$3,047.61

SKU: BKSB120-447SO

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 Big Brake Kit is an extreme brake upgrade designed for the 2005-2007 Subaru Impreza STI. It features larger-diameter disc rotors and 1-piece billet aluminum calipers for lightweight strength and corrosion resistance. Aluminum pistons enhance heat resistance and smooth operation.
Show original supplier description
The KSport SuperComp Big Brake Kit represents K-Sport's most extreme brake upgrade, engineered to deliver the highest level of stopping power for your 2005-2007 Subaru Impreza STI. This kit is designed as a direct, bolt-on replacement, requiring no modifications for installation. Constructed from a solid billet of aircraft-grade aluminum, the 1-piece calipers offer exceptional strength and light weight, while also being resistant to corrosion. The opposed-piston caliper design maximizes pad grip, reducing uneven wear and improving overall braking performance. Aluminum caliper pistons contribute to heat resistance and lighter weight, further enhancing braking dynamics. The kit includes reinforced carbon steel caliper brackets, allowing these larger-than-OEM calipers to mount directly to existing points. The SuperComp Big Brake Kit features 2-piece rotors with an aluminum center, which lowers rotational mass for quicker braking response and shorter stopping distances. This 2-piece design also minimizes rotor warpage by allowing for less restricted expansion and contraction of the outer iron section. The rotors are slotted and vented for optimal heat dissipation. The kit requires a minimum wheel diameter of 18 inches (457mm) and utilizes street pads.

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 NumberBKSB120-447SO
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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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