Description
A worn or failing rear brake master cylinder compromises your entire braking system—introducing sponginess, inconsistent pedal feel, and potential safety issues. The PROX Rebuild Kit (37.910030) delivers a complete solution with OEM-equivalent components, restoring your master cylinder to factory specifications without the cost of full replacement. Whether you’re maintaining a race car or refreshing daily-driver hydraulics, this kit provides the precision rebuild components you need for reliable, responsive braking.
- Complete rebuild kit
- Rear master cylinder application
- OEM-equivalent quality
- High-grade components included
- Meets/exceeds OEM specs
- MPN: 37.910030
- Bolt-on installation
- Professional-grade rebuild solution









