2019-2024 BMW X4 M / Competition (F98) Carbon Ceramic Brake Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2019-2024 BMW X4 M / Competition (F98) Carbon Ceramic Brake Kit — OEM-Size Replacement
The F98 BMW X4 M and X4 M Competition use a large OEM M brake package, so StopFlex keeps the factory 395 mm front and 370 mm rear rotor sizing instead of changing caliper position or brake balance. This carbon-ceramic replacement kit is for owners replacing heat-checked iron rotors, reducing black brake dust on open M wheels, or adding fade resistance and lower rotating mass for repeated high-speed stops. The kit includes carbon-ceramic rotors, matched pads, hats, and floating hardware for the 2019-2024 X4 M / Competition brake setup listed on this page.
- Built around the F98 X4 M / Competition OEM rotor references: 395 mm front and 370 mm rear.
- Carbon-ceramic friction rings reduce brake dust and rotating mass compared with the factory iron rotor package on this S58-powered coupe-SUV.
- Includes rotors, pads, hats, and floating hardware so the conversion stays matched to the original X4 M caliper layout.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW X4 M / Competition (F98) |
| Model years | 2019-2024 |
| Front rotor reference | X4 M/Competition: 395mm |
| Rear rotor reference | X4 M/Competition: 370mm |
| Page type | OEM-size carbon ceramic replacement |
| Minimum wheel size | 20" (for the 395 mm rotor) |
For OEM replacement orders, StopFlex builds around the factory rotor specification shown for this vehicle. Front floating-caliper setups require manual review before production. If the car uses aftermarket calipers such as Brembo, AP Racing, Alcon, or Wilwood, the order can still be built, but the exact caliper model, pad shape, and rotor dimensions must be confirmed before production.
This setup uses a 395 mm rotor, so the minimum wheel size is 20". Wheels under 20" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
Why StopFlex CCB
Lower Unsprung Mass
StopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.
High-Temperature Stability
The carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.
Rust-Free Rotor Surface
Carbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.
Long Street-Service Potential
In normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.
Low Visible Dust
When paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.
Premium Ceramic-Glaze Appearance
StopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.
Street-Usable Cold Bite
Street Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.
Continuous Fiber Reinforcement
Long-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.
Custom Rotor Hat Color
Every StopFlex OEM replacement order can be built with a custom rotor hat color, giving the carbon ceramic rotor package a cleaner match with the wheel, body color, and overall build style.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak into pads, fluid, seals, calipers, wheels, and nearby components. For long track sessions, mountain descents, or sustained aggressive driving, brake cooling and high-temperature fluid are still recommended.
Street / Track-Day / Motorsport Rotor Options
Street Spec
Ceramic coating, cross-drilled face, and large cooling channels.
Best for daily driving and premium street builds that need clean cold bite, low dust, corrosion-free appearance, and long service life.
Track-Day Spec
Ceramic coating, blank face, and honeycomb cooling channels.
Best for fast-road and track-day use where repeated braking stability matters more than maximum visual drilling style.
Motorsport Spec
Uncoated blank face with honeycomb cooling channels.
Best for race-focused builds that run competition pads, high-temperature fluid, cooling strategy, and a proper warm-up window. Not the default street choice.
Package Scope
| Item | Details |
|---|---|
| CCB rotors | Full-car set by default |
| CCB brake pads | Matched for StopFlex carbon ceramic rotors |
| 7075 aluminum floating rotor hats | Vehicle-specific fitment |
| Stainless floating hardware | Full-car hardware set |
| Rotor hat color | Custom rotor hat colors are available for every OEM replacement order. |
| Order scope | Default listing is full-car set. Front-only or rear-only orders can be arranged after confirmation. |
FAQ
Will this kit fit both the 2019-2024 BMW X4 M and X4 M Competition?
Yes, this page is limited to the F98 X4 M and X4 M Competition using the 395 mm front and 370 mm rear brake setup. Confirm your VIN, current rotor diameter, and caliper package before ordering because this kit is not for non-M X4 models.
Does the rear electronic parking brake still work?
Yes. This is an OEM-size rotor replacement for the F98 rear brake layout, so the factory rear calipers, electronic parking brake actuator, auto-hold function, and parking brake controls remain in use.
Why switch this X4 M from iron rotors to carbon ceramic?
The F98 X4 M is heavy, powerful, and hard on front brakes during repeated high-speed stops. Carbon-ceramic rotors handle heat with less fade, create much less visible dust, and remove rotating mass compared with the 395/370 mm iron rotor package.
What should I confirm before ordering?
Confirm the vehicle is a 2019-2024 F98 X4 M or X4 M Competition, verify 395 mm front and 370 mm rear rotor sizes, and check wheel barrel clearance if the vehicle has aftermarket wheels or non-OEM winter wheels.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
We’re here to help! Whether you need expert advice on brake setups, have questions about your order, or just want to share feedback, our team is ready to assist you. Reach out via your preferred channel below, or use the inquiry form.
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