Frenkit Performance Rear Brake Caliper Seal Rebuild Kit
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Frenkit Performance Rear Brake Caliper Seal Rebuild Kit - BMW M3 (F80) M4 (F82) M2 (F87) 340i/335i/330i (F30) 440i/435i/430i/428i (F32) 240i/235i/M240i (F22) 125i (F20)
Frenkit Performance brake caliper seal kits are built around a peroxide-vulcanised silicone rubber compound that outlasts conventional EPDM-based seals in both everyday and demanding conditions. Rated for continuous operation from -60°C to +200°C with spike tolerance up to 300°C, Frenkit's material retains its mechanical properties significantly better than competing brands at elevated temperatures — where other seals crack and harden, Frenkit seals stay flexible and functional.
This listing covers the rear caliper seal rebuild kit for the following BMW platforms: M3 (F80), M4 (F82), M2 (F87) (Blue Calipers), 340i / 335i / 330i / 318i / 320i / 323i (F30) with M Performance Brake Package, 440i / 435i / 430i / 428i (F32), M240i / M235i (F22), and 125i M Sport (F20).
Important: This kit services one caliper only. Two kits are required to rebuild a full axle pair. This kit only suits M-Sport calipers fitted to non-M vehicles — confirm your caliper type before ordering.
Key Features
- Peroxide-vulcanised high-temp silicone rubber construction
- Operating range: -60°C to +200°C continuous, up to 300°C short-term spikes
- Superior elongation, tensile strength, and tear resistance versus standard seals
- Retains material properties 30% better than competitors after ageing at 200°C for 70 hours
- Remains flexible and functional after 2 hours at 300°C — where competing seals crack and become brittle
- Suits M-Sport calipers on non-M BMW models (F20 / F22 / F30 / F32) and M-specific calipers (F80 / F82 / F87)
- One kit services a single caliper
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and caliper configuration are confirmed before ordering.
Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| BMW | 1 Series 125i M Sport | F20 | - |
| BMW | 2 Series M235i | F22 | - |
| BMW | 2 Series M240i M Performance | F22 | - |
| BMW | 2 Series M2 (Blue Calipers) | F87 | S55 |
| BMW | 3 Series 318i / 320i / 323i / 330i (M Sport Caliper) | F30 | - |
| BMW | 3 Series 340i | F30 | B58B30M0 |
| BMW | 3 Series M Performance Brake Package | F30 | - |
| BMW | 3 Series M3 | F80 | S55B30A |
| BMW | 4 Series 428i / 430i | F32 | - |
| BMW | 4 Series 435i / 440i | F32 | - |
| BMW | 4 Series M4 | F82 | S55B30A |
| Porsche | 911 Carrera 4 3.6 | 964 | M64/01 |
| Porsche | 911 Carrera RS 3.6 | 965 | - |
| Porsche | 911 C23.6 | 966 | - |
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