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Ksport

Rear Brake Kit with 4-Piston Calipers

$2,414.50 $2,084.78 Save $329.72

SKU: BKSB150-433SO

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

Easy — 1–2 hours

Overview

It features a 1-piece caliper construction from aircraft-grade aluminum for strength and corrosion resistance, with aluminum pistons for better heat management. This rear brake kit includes slotted rotors and 4-piston calipers, designed for easy installation with minimal tools.
Show original supplier description
This rear kit features lightweight, one-piece calipers CNC-machined from aircraft-grade billet aluminum, incorporating a differential bore configuration and opposed piston design for improved pad wear and rigidity over OEM components. The kit includes two-piece rotors, available in slotted or cross-drilled options, to provide lightweight, fade-free performance. Slotted rotors are recommended for track use, while cross-drilled rotors are better suited for daily driving due to cooler running temperatures. The calipers are equipped with aluminum pistons for superior heat resistance and feature stainless-steel brake lines that prevent expansion under pressure, leading to quicker pedal response and a firmer pedal feel. Included with the kit are NAOC Ceramic SC5 Street Pads, offering optimal braking performance for street and occasional track use. These pads significantly reduce brake dust and noise while minimizing rotor wear, with an optimal operating temperature range of 194°F - 1022°F. This Ksport Procomp Big Brake Kit is specifically designed to fit the Subaru Impreza WRX GRB chassis from 2008-2014. Please note that Ksport Big Brake kits are built to order, and production and delivery typically take 4-6 weeks.

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 NumberBKSB150-433SO
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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