Righetti MA21 Complete Rear MINI / CADET Brake System
The Righetti Ridolfi MA21 is a high-quality hydraulic rear brake system designed specifically for MINI and CADET racing-kart applications. It is a direct replacement for compatible CRG NewAge MINI rear brake systems and is based on the proven CRG V05-style brake design.
The MA21 provides strong, consistent braking performance with smooth pedal feel and dependable operation. Its self-adjusting hydraulic caliper automatically maintains proper pad clearance as the brake pads wear, reducing maintenance and helping provide consistent braking throughout a race weekend.
150x14mm Floating Rear Brake Disc
The system uses a 150x14mm floating brake disc. The floating design allows controlled movement between the disc and carrier as brake temperature changes, helping maintain proper alignment, consistent pad contact and reliable braking performance.
This compact disc size is well suited to MINI and CADET kart applications while still providing the heat capacity and braking force required for competitive racing.
Direct CRG NewAge MINI Replacement
The MA21 is designed as a direct replacement for compatible CRG NewAge MINI rear brake systems. Its CRG-style configuration makes it an excellent choice for replacing worn, damaged, discontinued or expensive original brake components.
It can also be used as a complete rear brake conversion on other compatible MINI and CADET chassis when paired with the correct disc carrier and caliper mounting bracket.
Excellent Choice For:
- Replacing a CRG NewAge MINI rear brake system
- Restoring a MINI or CADET kart with an incomplete brake system
- Converting a compatible MINI or CADET chassis to hydraulic rear brakes
- Replacing worn or discontinued original brake components
- New MINI and CADET kart builds
- Racers seeking a reliable, easily serviced rear brake system
Brake System Includes:
- Righetti MA21 self-adjusting rear brake caliper
- Rear brake pads
- Hydraulic master cylinder
- Braided stainless-steel brake line
- 150x14mm floating rear brake disc
- Associated components shown in the product images
Required Parts Sold Separately:
- Righetti MA21 30mm Floating Brake Disc Carrier
- Righetti MA21 Rear Caliper Mounting Bracket – select the mount that matches your chassis bearing-carrier configuration
Features:
- Designed for MINI and CADET racing karts
- Direct replacement for compatible CRG NewAge MINI rear brakes
- Based on the proven CRG V05-style brake design
- Self-adjusting hydraulic rear brake caliper
- Strong and consistent braking performance
- Smooth pedal feel and predictable modulation
- Braided stainless-steel brake line
- 150x14mm floating brake disc
- Compact design suitable for MINI and CADET applications
- Complete rear brake package as pictured
- Replacement and service components readily available
Universal MINI / CADET Brake Conversion
The MA21 is not limited to CRG chassis. It can be installed on other compatible MINI and CADET racing karts when used with the correct 30mm floating brake-disc carrier and MA21 rear caliper mounting bracket.
This makes the MA21 a practical solution for older chassis, custom builds and karts with brake systems that are difficult or expensive to repair.
Important Fitment Information:
The 30mm brake-disc carrier and caliper mounting bracket are sold separately.
Brake configurations can vary by chassis manufacturer, model and production year. Before ordering, verify the chassis bearing-carrier configuration, 30mm axle diameter, brake-disc clearance, master-cylinder mounting and brake-line routing.
Professional installation and proper brake-system bleeding are strongly recommended. For fitment questions, please contact Fastech-Racing before ordering.





