Refurbish. Restore. Race Again.
 
Designed specifically for Upgrade Motorsport Spherical Bearing Master Cylinders, this high quality piston seal kit allows you to rebuild and refresh your master cylinder season after season, maintaining peak braking performance and reliability.
 
Built for Motorsport Durability
Upgrade Motorsport Spherical Bearing master cylinders are engineered to operate under extreme conditions, using precision machined internals and high grade materials for consistent performance. This seal kit ensures those standards are maintained throughout the life of your system.
 
Why Refurb Instead of Replace
The spherical bearing design reduces side loading on the piston, extending seal life and improving durability. With this service kit, you can:
Restore original performance and pedal feel
Maintain hydraulic efficiency and sealing integrity
Extend component lifespan at a fraction of replacement cost
 
Key Features
Direct replacement piston seals for Upgrade spherical bearing master cylinders
High performance materials resistant to heat, pressure and brake fluid
Maintains smooth piston movement and consistent modulation
Designed for quick strip down and rebuild during off season servicing
 
Ideal For
Track day cars
Drift and rally builds
Formula Student teams
Motorsport engineers and race teams
 
Performance You Can Rely On
A properly maintained master cylinder delivers consistent pedal feel, improved modulation and reliable braking under pressure. This kit ensures your system performs exactly as intended when it matters most.
 
Summary
Keep your braking system race ready without compromise. This piston seal kit gives you the confidence to strip, rebuild and go again season after season.