2019-2026+ BMW M135i (F40/F70) Carbon Ceramic Brake Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2019-2026+ BMW M135i (F40/F70) Carbon Ceramic Brake Kit — OEM-Size Replacement
The 2019-2026+ BMW M135i F40/F70 uses large OEM-size M Performance brake hardware, so the right carbon-ceramic replacement must match the 360mm front and 330mm rear rotor references rather than rely on generic 1 Series fitment. This StopFlex kit replaces the iron discs with carbon-ceramic rotors, matched pads, hats, and floating hardware to reduce brake dust, cut rotating unsprung mass, and improve heat stability during fast road and track-day use. It is built for M135i applications with the exact rotor sizes listed on this page.
- OEM-size replacement for BMW M135i F40/F70 brake setups using 360mm front rotors and 330mm rear rotors.
- Includes carbon-ceramic rotors, matched pads, hats, and floating hardware so the conversion is specified as a complete axle-pair kit rather than loose discs only.
- Designed for owners replacing heat-checked, dust-heavy, or track-worn iron rotors while keeping the factory M135i caliper architecture and wheel package dependent on the listed rotor sizes.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW M135i (F40/F70) |
| Model years | 2019-2026+ |
| Front rotor reference | M135i: 360mm |
| Rear rotor reference | M135i: 330mm |
| Page type | OEM-size carbon ceramic replacement |
| Minimum wheel size | 15" (for the 135 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 135 mm rotor, so the minimum wheel size is 15". Wheels under 15" 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 every 2019-2026+ BMW M135i F40 or F70?
No. Fitment is limited to M135i F40/F70 cars that match the 360mm front and 330mm rear rotor references listed for this page. Confirm the chassis, trim, and measured rotor diameters before ordering.
Does the kit keep the BMW electronic parking brake and Auto Hold functions?
Yes, when installed on the correct M135i rear brake configuration, the kit retains the factory rear caliper and parking-brake control strategy because it replaces the rotor, pad, hat, and floating hardware rather than converting the rear caliper system.
Why change from the OEM iron rotors on an M135i?
Carbon-ceramic rotors reduce brake dust on open wheels, lower rotating unsprung mass at each corner, and tolerate repeated high-temperature braking better than iron discs of the same 360mm front and 330mm rear size.
What should I verify before placing the order?
Verify that the car is an M135i in the F40/F70 family, confirm 360mm front and 330mm rear rotor sizing, check wheel barrel clearance, and provide VIN or brake-option details if there is any uncertainty.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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