# CMX K8C-103930 Rear Disc Brake Kit for 2016-2020 Kia Optima

### 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-103930 is a vehicle-specific disc brake kit designed for compatible applications for 2016-2020 Kia Optima.

### 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
-   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
-   Engineered with High Carbon SteelRX™ alloy (Pressure Resistant, Thermal Conductive) and dipped in an Anti-Rust Black Paint to improve durability

### Vehicle Fitment

**Fitment Position:** Rear

**Fitment Summary:** 2016-2020 Kia Optima

**Position:** Rear

-   2017-2020 Kia Optima — Position: Rear; Note: With Manual Parking Brake
-   2016 Kia Optima — Position: Rear; Fitment Precision: LX/EX/SX/SXL/SX Limited/LX 1.6T and with GAS engine; Note: With Manual Parking Brake

### 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-103930.

**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-103930 fitment
-   CMX Disc Brake Kit
-   Rear Disc Brake Kit
-   2016 Kia Optima Disc Brake Kit

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2017

Kia

Optima

Rear

With Manual Parking Brake

2018

Kia

Optima

Rear

With Manual Parking Brake

2019

Kia

Optima

Rear

With Manual Parking Brake

2020

Kia

Optima

Rear

With Manual Parking Brake

2016

Kia

Optima

Rear

LX/EX/SX/SXL/SX Limited/LX 1.6T and with GAS engine

With Manual Parking Brake

## Details

- **Price:** 168.14 CAD
- **Vendor:** CMX
- **Type:** Disc Brake Kit
- **Tags:** 2016 Kia Optima, 2017 Kia Optima, 2018 Kia Optima, 2019 Kia Optima, 2020 Kia Optima, Automotive Parts, CMX, CMX K8C-103930, Daily Driver, Direct Replacement, Disc Brake Kit, Disc Rotors and Ceramic Brake Pads Kit, K8C-103930, Rear, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 168.14 CAD | In stock |

## Images

- CMX K8C-103930 Disc Brake Kit for 2016-2020 Kia Optima - Rear product image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/cmx-k8c-103930-disc-brake-kit-for-2016-2020-kia-optima-rear-k8c-103930)
> Updated: 2026-06-03