# Front Disc Brake Rotors Pair For Cadillac ATS CT4 K8-100121

Engineered with carbon-enhanced XCast™ (G3000) iron castings to achieve an optimal wear resistance, tensile strength and steel hardness providing unmatched braking performance, 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, CNC-Machined to the tightest tolerances to guarantee manufacturing precision and accuracy, Thickness and Metallurgy electronically validated for manufacturing consistency, Best matched with CMX, TEC, SIM or PPF brake pads, Kit Includes: 2x Front Disc Brake Rotor (Both Side)

## Details

- **Price:** 123.59 CAD
- **Vendor:** CMX
- **Type:** Wheel Bearing And Hub Assembly Kit
- **Tags:** AR90185 CR90185 PR90185 YH479077 YH479077P 125.62136 55643 2940927 ONZ1083 2488821498 3488821498 7488821498 940927 Q1581043 581043FZN 581043R 581043 GM1009 AGM1009, CMX, Front

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 123.59 CAD | In stock |

## Images

- K8-100121_CMX_Front

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/front-disc-brake-rotors-pair-for-cadillac-ats-ct4-k8-100121)
> Updated: 2026-07-14