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Subaru

GT|S Series 355x32mm 2-Piece Drilled Front Big Brake Kit

$5,296.00 $4,595.00 Save $701.00

SKU: 1M1.8039AS

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Overview

The Brembo 1M1.8039AS is a front big brake kit designed for enhanced stopping power. This GT|S Series kit features 355x32mm 2-piece drilled rotors and a 6-piston, cast monobloc radial mount caliper with a hard-anodized black finish. It includes Brembo-engineered CNC billet caliper adapters and all necessary hardware for installation.
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The Brembo 1M1.8039AS GT|S Series Big Brake Kit is engineered to significantly upgrade your vehicle's braking performance. This front kit includes 355mm x 32mm two-piece drilled rotors, designed for optimal heat dissipation and consistent stopping power. The calipers are a cast monobloc radial mount design, finished in a durable hard-anodized black. They feature six pistons, each with an inner pressure seal, recessed dust boot, and stainless steel insert for longevity and reliable operation. The rotor-to-hat mounting utilizes a floating D-bobbin system with an anti-rattle spring to ensure quiet operation. Constructed from advanced high-carbon alloy with corrosion-resistant plating, the rotors are built to withstand demanding conditions. The kit comes complete with Brembo-engineered CNC billet caliper adapters and all the necessary hardware for a straightforward installation. This kit provides a substantial performance improvement over stock braking systems, rated at 4/5 for performance over stock and 5/5 for stopping power, with medium dust and a 3/5 noise level. This Brembo big brake kit is compatible with various Subaru models, including the WRX from 2015-2021, Impreza WRX from 2014-2014 (GE, GH, GR, GV chassis), and Legacy 2.5i from 2012-2014. It is also noted for compatibility with WRX models equipped with EyeSight and EPB (Electronic Parking Brake) from 2016-2021.

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.

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Specifications

BrandSubaru
Part Number1M1.8039AS
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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