# CMX K8C-104377 Rear Disc Brake Kit for 2001-2006 Kia Optima, Hyundai Sonata, Hyundai XG350 & 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 CMX K8C-104377 is a vehicle-specific disc brake kit designed for compatible applications for 2001-2006 Kia, Hyundai Optima, Sonata, XG350, XG300.

### Key Features

-   Exclusive CeramiX™ High-Density Ceramic compound provides optimal braking performance (Stable Friction, High Temperature Stability, Extended Lifetime
-   Exclusive MetalliX™ Low Resin Semi-Metallic compound provides unmatched braking performance (abrasive friction, high temperature tolerance, quicker compound
-   TQ OE-matched material gives our spring kit the ideal balance between tensile and hardness and provide consistent wear, long life, and quiet operation
-   Engineered with carbon-enhanced XCast™ (G3000) iron castings to achieve an optimal wear resistance, tensile strength and steel hardness providing unmatched
-   Rubberized Multi-Layer Stainless Steel Shim reduces noise, vibration, and harshness for complete quietness

### Vehicle Fitment

**Fitment Position:** Rear

**Fitment Summary:** 2001-2006 Kia, Hyundai Optima, Sonata, XG350, XG300

**Position:** Rear

-   2006 Kia Optima — Position: Rear; Note: With 5 Lug Wheels
-   2005 Hyundai Sonata — Position: Rear; Note: From 03/01/05
-   2002-2005 Hyundai XG350 — Position: Rear
-   2001 Hyundai XG300 — 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.

**What part number is this?**  
The listed part number is K8C-104377.

**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 Optima
-   Disc Brake Kit for Kia Optima
-   K8C-104377 fitment
-   CMX Disc Brake Kit
-   Rear Disc Brake Kit
-   2001 Kia Optima Disc Brake Kit

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2006

Kia

Optima

Rear

With 5 Lug Wheels

2005

Hyundai

Sonata

Rear

From 03/01/05

2002

Hyundai

XG350

Rear

2003

Hyundai

XG350

Rear

2004

Hyundai

XG350

Rear

2005

Hyundai

XG350

Rear

2001

Hyundai

XG300

Rear

## Details

- **Price:** 164.21 CAD
- **Vendor:** CMX
- **Type:** Disc Brake Kit
- **Tags:** 2001 Hyundai XG300, 2002 Hyundai XG350, 2003 Hyundai XG350, 2004 Hyundai XG350, 2005 Hyundai Sonata, 2005 Hyundai XG350, 2006 Kia Optima, Automotive Parts, CMX, CMX K8C-104377, Daily Driver, Direct Replacement, Disc Brake Kit, Disc Rotors and Ceramic Brake Pads Kit, K8C-104377, Rear, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 164.21 CAD | In stock |

## Images

- CMX K8C-104377 Disc Brake Kit for 2001-2006 Kia Optima, Hyundai Sonata, Hyundai XG350 & more - Rear product image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/cmx-k8c-104377-disc-brake-kit-for-2001-2006-kia-optima-hyundai-sonata-hyundai-xg350-and-more-rear-k8c-104377)
> Updated: 2026-06-03