# Genius KG-100557 Disc Brake Rotor for 2005-2009 Subaru Legacy, Subaru Outback - Rear

### Performance Overview

Genius has been the undisputed leader in coated rotor manufacturing for the last 15 years thanks to it's groundbreaking lab engineered G-Cast™ iron cast and G-Coat™ dipped conative. Genius in-house engineered managed to develop the best combination of iron cast and coating to produce unmatched protection that adhere and stay durable for the lifetime of the rotor, without compromising on the rotor braking performan...

### Key Features

-   Engineered with with Carbon-Enhanced G-Cast™ (G11H18/G3000) iron castings to achieve an optimal braking performance (strength, stability, durability)
-   Exclusive G-Coat™ double-layer (8µm) protective coating provides rust protection on 100% of the non-braking surface
-   100% Precision Spin and Mill-Balanced for smoother stopping and zero vibration at any speed
-   Cross-Hatched smooth surface to improve the pad's ability to grip the rotor surface, especially during initial brake applications or in wet conditions
-   Double disc ground finish eliminates lateral run-out and DTV (disk thickness variation) issues on the rotor and improves pad-rotor bed-in
-   Tested for maximum tolerance to voluminous amount of constant thermal cycles

### Package include:

-   2x Disc Brake Rotor

### Vehicle Fitment

**Fitment Summary:** 2005-2009 Subaru Legacy, Subaru Outback

**Position:** Rear

-   2008-2009 Subaru Legacy — Position: Rear | Fitment Precision: 2.5L and with Naturally Aspirated
-   2008-2009 Subaru Legacy — Position: Rear | Fitment Precision: 3.0L | Note: With 17" Factory Wheels
-   2007 Subaru Legacy — Position: Rear | Fitment Precision: Naturally Aspirated
-   2006 Subaru Legacy — Position: Rear | Fitment Precision: 2.5i
-   2005 Subaru Legacy — Position: Rear | Fitment Precision: i/Limited
-   2005-2009 Subaru Outback — Position: Rear

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase. This listing includes fitment data for 2005-2009 Subaru Legacy, Subaru Outback.

**What part number is this?**  
The listed part number is KG-100557.

**Is this product designed for direct replacement?**  
Yes. This Disc Brake Rotor 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 Rotor for Subaru Legacy
-   KG-100557 fitment
-   Genius Disc Brake Rotor
-   Rear Disc Brake Rotor
-   2005-2009 Subaru Legacy Disc Brake Rotor

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2008

Subaru

Legacy

Rear

2.5L and with Naturally Aspirated

2009

Subaru

Legacy

Rear

2.5L and with Naturally Aspirated

2008

Subaru

Legacy

Rear

3.0L

With 17" Factory Wheels

2009

Subaru

Legacy

Rear

3.0L

With 17" Factory Wheels

2007

Subaru

Legacy

Rear

Naturally Aspirated

2006

Subaru

Legacy

Rear

2.5i

2005

Subaru

Legacy

Rear

i/Limited

2005

Subaru

Outback

Rear

2006

Subaru

Outback

Rear

2007

Subaru

Outback

Rear

2008

Subaru

Outback

Rear

2009

Subaru

Outback

Rear

## Details

- **Price:** 86.97 CAD
- **Vendor:** Genius
- **Type:** Disc Brake Rotor
- **Tags:** 2005-2009 Subaru Legacy, Automotive Parts, Brake Parts, Disc Brake Rotor, Genius, KG-100557, Rear, Replacement Parts, Subaru Legacy, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 86.97 CAD | In stock |

## Images

- Genius KG-100557 Disc Brake Rotor for 2005-2009 Subaru Legacy, Subaru Outback - Rear

---

> Source: [Standard Auto Part](www.standardautopart.com/products/genius-kg-100557-disc-brake-rotor-2005-2009-subaru-legacy)
> Updated: 2026-06-10