# Transit Auto K8F-105100 Rear Disc Brake Kit for 2020-2021 BMW X4

### 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 K8F-105100 is a vehicle-specific disc brake kit designed for compatible applications for 2020-2021 BMW X4.

### Key Features

-   Exclusive PowerGrip™ Semi-Metallic formula provides unmatched braking power (powerful friction, extreme temperature tolerance, aggressive initial bite) while
-   Engineered with carbon-enhanced XCast™ (G3000) iron castings to achieve an optimal wear resistance, tensile strength and steel hardness providing unmatched
-   Fiber-Reinforced Multi-Layer Shim with a rubber core minimize noise, vibration, and harshness for complete quietness
-   100% Precision Spin and Mill-Balanced for smoother stopping and zero vibration at any speed
-   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:** 2020-2021 BMW X4

**Position:** Rear

-   2020-2021 BMW X4 — Position: Rear; Fitment Precision: M/M Competition; Note: With 330mm Diameter Rear 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 K8F-105100.

**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 X4
-   Disc Brake Kit for BMW X4
-   K8F-105100 fitment
-   Transit Auto Disc Brake Kit
-   Rear Disc Brake Kit
-   2020 BMW X4 Disc Brake Kit

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2020

BMW

X4

Rear

M/M Competition

With 330mm Diameter Rear Rotor

2021

BMW

X4

Rear

M/M Competition

With 330mm Diameter Rear Rotor

## Details

- **Price:** 156.22 CAD
- **Vendor:** Transit Auto
- **Type:** Disc Brake Kit
- **Tags:** 2020 BMW X4, 2020-2021-bmw-x4-brakes-rear-m-m-competition-with-330mm-diameter-rear-rotor-esi7740407, 2021 BMW X4, Automotive Parts, Daily Driver, Direct Replacement, Disc Brake Kit, Disc Rotors and Semi-Metallic Brake Pads Kit, K8F-105100, Rear, Transit Auto, Transit Auto K8F-105100, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 156.22 CAD | In stock |

## Images

- Transit Auto K8F-105100 Disc Brake Kit for 2020-2021 BMW X4 - Rear product image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/transit-auto-k8f-105100-disc-brake-kit-for-2020-2021-bmw-x4-rear-k8f-105100)
> Updated: 2026-07-15