# Transit Auto K8A-103900 Front Disc Brake Kit for 2019-2024 Subaru Crosstrek, Subaru WRX, Subaru Legacy & more

### Performance Overview

Transit Auto offers the most comprehensive and highest-quality replacement kits on the market. Thanks to our cutting-edge AI, in-house product team, and proprietary fitment data, we are able to build and deliver the most accurate kits on the market. All our kits include the highest-quality parts on the market, sourced directly by Transit and its sub-brands. Backed by over 50 years of experience and with in-house quality assurance, every customer Transit Auto K8A-103900 is a vehicle-specific disc brake kit designed for compatible applications for 2019-2024 Subaru Crosstrek, WRX, Legacy, Outback, Forester.

### Key Features

-   AmeriBRAKES pads are engineered with vehicle-optimized formulas matching OE specs for optimal braking
-   Engineered with carbon-enhanced XCast™ (G3000) iron castings to achieve an optimal wear resistance, tensile strength and steel hardness providing unmatched
-   Exclusive carbon enhanced materials to ensure optimal all-condition performance
-   100% Precision Spin and Mill-Balanced for smoother stopping and zero vibration at any speed
-   1:1 OE Design - Chamfered and slotted only when applicable to ensure safety and perfect fit

### Vehicle Fitment

**Fitment Position:** Front

**Fitment Summary:** 2019-2024 Subaru Crosstrek, WRX, Legacy, Outback, Forester

**Position:** Front

-   2024 Subaru Crosstrek — Position: Front
-   2022-2023 Subaru WRX — Position: Front
-   2020-2024 Subaru Legacy — Position: Front
-   2020-2024 Subaru Outback — Position: Front
-   2019-2024 Subaru Forester — Position: Front; Note: With 316mm Diameter Front Rotor

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is K8A-103900.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   Disc Brake Kit for Crosstrek
-   Disc Brake Kit for Subaru Crosstrek
-   K8A-103900 fitment
-   Transit Auto Disc Brake Kit
-   Front Disc Brake Kit
-   2019 Subaru Crosstrek Disc Brake Kit

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2024

Subaru

Crosstrek

Front

2022

Subaru

WRX

Front

2023

Subaru

WRX

Front

2020

Subaru

Legacy

Front

2021

Subaru

Legacy

Front

2022

Subaru

Legacy

Front

2023

Subaru

Legacy

Front

2024

Subaru

Legacy

Front

2020

Subaru

Outback

Front

2021

Subaru

Outback

Front

## Details

- **Price:** 214.3 CAD
- **Vendor:** Transit Auto
- **Type:** Disc Brake Kit
- **Tags:** 2020 Subaru Legacy, 2020 Subaru Outback, 2021 Subaru Legacy, 2021 Subaru Outback, 2022 Subaru Legacy, 2022 Subaru WRX, 2023 Subaru Legacy, 2023 Subaru WRX, 2024 Subaru Crosstrek, 2024 Subaru Legacy, Automotive Parts, Daily Driver, Direct Replacement, Disc Brake Kit, Disc Rotors and Ceramic Brake Pads Kit, Front, K8A-103900, Transit Auto, Transit Auto K8A-103900, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 214.30 CAD | In stock |

## Images

- Transit Auto K8A-103900 Disc Brake Kit for 2019-2024 Subaru Crosstrek, Subaru WRX, Subaru Legacy & more - Front product image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/transit-auto-k8a-103900-disc-brake-kit-for-2019-2024-subaru-crosstrek-subaru-wrx-subaru-legacy-and-more-front-k8a-103900)
> Updated: 2026-06-03