StopTech BMW F20 F21 Sport Brake Disc M135i, M140i, M235i, 335i and 435i – Single Replacement Performance Rotor
Upgrade your BMW braking performance with the StopTech Sport Brake Disc, a direct OEM replacement brake disc engineered for popular BMW F Series models including M135i, M140i, M235i, 335i and 435i. Available in slotted, slotted and drilled and cross drilled face options, these performance brake discs deliver improved bite, better cooling and consistent stopping power for fast road use while retaining stock calipers and factory fitment.
At Nforcd we have fitted these StopTech rotors to customer cars and our own builds. Feedback has been consistently positive on pedal feel, wet and dry braking performance and resistance to fade. If you want a proven BMW brake upgrade without going to a big brake kit, this is the smart, cost effective choice.
Why choose StopTech Sport Brake Discs for your BMW
- Direct replacement for OEM discs. OE dimensions for easy fit with stock calipers and pads.
- Performance face options to suit your drive: slotted, slotted and drilled, or cross drilled.
- Improved cooling and bite. Slotting and drilling help clear pad gases and debris for sharper response.
- Corrosion resistant black e-coating on non-friction areas for a cleaner look that lasts.
- Match BBK aesthetics. Ideal to visually and functionally complement front big brake kits.
- Cryo option available on selected part numbers for enhanced durability and longer service life.
Key specifications
- Front disc diameter: 340 mm
- Rear disc diameter: 345 mm
- Fitment: direct OEM replacement, stock calipers
- Finish: e-coated hats and non-swept areas for rust protection
- Sold individually. Order two discs for a complete axle set.
For the best results, pair these rotors with StopTech Brake Pads and follow a proper pad and disc bed-in procedure. This combination is a highly rated BMW brake upgrade for daily driving, fast road and spirited use.
Compatibility
BMW F Chassis
- 1 Series F20 and F21 M135i and M140i 2012+
- 1 Series F22 M235i and xi 2013
- 3 Series F30 and F31 328i 2012 rear only
- 3 Series F30 and F31 Active Hybrid 3 2012 to 2013 front only. Slotted only
- 3 Series F30 335i 2012 rear only
- 4 Series F32 and F36 420i 2013 front only. Slotted only
- 4 Series F32, F33 and F36 420d 2013+ front only. Slotted only
- 4 Series F32, F33 and F36 428i 2013+ front only. Slotted only
- 4 Series F32, F33 and F36 435i 2013+ front only. Slotted only
- 4 Series F32, F33 and F36 440i and ix 2013+ front only. Slotted only
- 4 Series F36 440i and ix 2016+ front only. Slotted and drilled
Part numbers
Front
- 126.34140SL or SR slotted discs
- 127.34140L or R slotted and drilled discs
- 128.34140L or R cross drilled discs
Rear
- 126.34145SL or SR slotted discs
- 127.34145L or R slotted and drilled discs
Installation and support
Professional fitting available at Nforcd, Warwickshire. Email Sales@nforcd.com for a fitting quote or advice on the right StopTech rotor option for your BMW. We are a trusted UK supplier of BMW performance brake discs and are happy to help with setup and bedding guidance.
Warranty
6 months or 6,000 motorway miles warranty from StopTech. Please retain proof of purchase and follow correct installation and bedding procedures.
Helpful notes
- Check your existing disc size and axle requirement before ordering. These are sold as single rotors.
- Left and right specific part numbers where noted. Match SL or SR and L or R to the correct side.
- Cryogenically treated versions may be available on selected references. Contact us for details.
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