# Genius KG-100523 Disc Brake Rotor for 2001-2010 Kia Magentis, Kia Optima and More - 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:** 2001-2010 Kia Magentis, Kia Optima, Hyundai Sonata, Hyundai Tucson, Kia Sportage, Hyundai XG350

**Position:** Rear

-   2007-2010 Kia Magentis — Position: Rear
-   2007-2010 Kia Optima — Position: Rear
-   2006-2010 Hyundai Sonata — Position: Rear | Fitment Precision: 2.4L
-   2006 Kia Magentis — Position: Rear | Note: With 5 Lug Wheels
-   2006 Kia Optima — Position: Rear | Note: With 5 Lug Wheels
-   2005 Hyundai Sonata — Position: Rear | Note: From 03/01/05
-   2005-2009 Hyundai Tucson — Position: Rear | Fitment Precision: FWD
-   2005 Kia Magentis — Position: Rear | Note: From 10/05
-   2005-2010 Kia Sportage — Position: Rear | Fitment Precision: FWD
-   2002-2005 Hyundai XG350 — 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 2001-2010 Kia Magentis, Kia Optima, Hyundai Sonata, Hyundai Tucson, Kia Sportage, Hyundai XG350.

**What part number is this?**  
The listed part number is KG-100523.

**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 Kia Magentis
-   KG-100523 fitment
-   Genius Disc Brake Rotor
-   Rear Disc Brake Rotor
-   2001-2010 Kia Magentis Disc Brake Rotor

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2007

Kia

Magentis

Rear

2008

Kia

Magentis

Rear

2009

Kia

Magentis

Rear

2010

Kia

Magentis

Rear

2007

Kia

Optima

Rear

2008

Kia

Optima

Rear

2009

Kia

Optima

Rear

2010

Kia

Optima

Rear

2006

Hyundai

Sonata

Rear

2.4L

2007

Hyundai

Sonata

Rear

2.4L

2008

Hyundai

Sonata

Rear

2.4L

2009

Hyundai

Sonata

Rear

2.4L

2010

Hyundai

Sonata

Rear

2.4L

2006

Kia

Magentis

Rear

With 5 Lug Wheels

2006

Kia

Optima

Rear

With 5 Lug Wheels

2005

Hyundai

Sonata

Rear

From 03/01/05

2005

Hyundai

Tucson

Rear

FWD

2006

Hyundai

Tucson

Rear

FWD

2007

Hyundai

Tucson

Rear

FWD

2008

Hyundai

Tucson

Rear

FWD

2009

Hyundai

Tucson

Rear

FWD

2005

Kia

Magentis

Rear

From 10/05

2005

Kia

Sportage

Rear

FWD

2006

Kia

Sportage

Rear

FWD

2007

Kia

Sportage

Rear

FWD

2008

Kia

Sportage

Rear

FWD

## Details

- **Price:** 76.87 CAD
- **Vendor:** Genius
- **Type:** Disc Brake Rotor
- **Tags:** 2001-2010 Kia Magentis, Automotive Parts, Brake Parts, Disc Brake Rotor, Genius, KG-100523, Kia Magentis, Rear, Replacement Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 76.87 CAD | In stock |

## Images

- Genius KG-100523 Disc Brake Rotor for 2001-2010 Kia Magentis, Kia Optima and More - Rear

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/genius-kg-100523-disc-brake-rotor-2001-2010-kia-magentis)
> Updated: 2026-07-16