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Ksport

4-Piston Caliper Kit with 2-Piece Vented Slotted Rotors

$2,414.50 $2,293.25 Save $121.25

SKU: BKSB050-433SO

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

Moderate — 2–4 hours

Overview

This kit features 4-piston calipers with a 1-piece construction from aircraft-grade aluminum for light weight and strength. The calipers have aluminum pistons for better heat resistance and corrosion freedom. Rotors are 2-piece vented and slotted with an aluminum center, reducing rotational mass and improving response.
Show original supplier description
This comprehensive upgrade kit ensures superior stopping power and reliability when you need it most. The calipers are constructed from a single billet of aircraft-grade aluminum, offering a lightweight yet incredibly strong and corrosion-free foundation. Inside, aluminum pistons provide improved heat resistance and long-term performance. The 2-piece rotors feature a vented and slotted design with an aluminum center hat, which reduces rotational mass, sharpens braking response, and shortens stopping distances. This design also minimizes the risk of rotor warping by allowing for more unrestricted expansion and contraction. Reinforced carbon steel caliper brackets ensure these larger-than-OEM calipers mount directly to the existing points. The kit includes heavy-duty caliper seals for sustained high-temperature use and stainless steel brake lines that resist expansion under pressure, leading to a firmer and more responsive pedal feel. Key specifications include 4-piston calipers, 330mm (13-inch) outside diameter rotors, and a minimum required wheel diameter of 432mm (17 inches). It is compatible with the 1993-1998 Subaru Impreza STI models.

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 NumberBKSB050-433SO
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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