Ksport

Supercomp Rear Big Brake Kit

$2,770.56

SKU: BKSB020-447SO

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

Description

The Ksport Supercomp Big Brake Kit represents an extreme upgrade for your Subaru Forester (2003-2007), engineered to deliver superior stopping power without requiring modifications to your vehicle's original setup. This sophisticated, bolt-on system enhances the performance of your existing Procomp kit with larger calipers, rotors, and brake pads, along with an increased number of pistons and standard full-floating rotors for improved self-centering. Constructed from a solid billet of aerospace-quality aluminum, the one-piece caliper design ensures lightweight strength and corrosion resistance, while aluminum pistons offer better heat management. Its two-piece floating rotor design allows for slight adjustments, reducing brake drag and improving performance through more even application. The included SC5 Street Pads provide optimal braking for street and occasional track use, reducing dust and noise while maintaining effective performance across a wide temperature range (194°F - 1022°F). D.O.T. compliant stainless-steel braided brake lines are standard, offering a quicker pedal response and firmer pedal feel by preventing expansion under pressure. This specific kit features 356mm (14-inch) diameter, 32mm width, slotted rotors, recommended for vehicles that see more track use. Custom caliper color options are available, including standard painted colors like Orange, Red, Black, and Yellow, with premium high polish finishes and over 20,000 custom color finishes also being offered. Standard kit inclusions are (2) Forged Monoblock Aluminum Calipers, (2) Lightweight Two-Piece Rotors (Slotted or Drilled), (1) Set of SC5 Street Brake Pads, (2) Stainless Steel Brake Lines, and all necessary mounting components and hardware. Ksport Big Brake kits are built to order, so please allow 4-6 weeks for production and delivery.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKsport
Part NumberBKSB020-447SO
CategoryBrakes

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy