GMA ENGINEERING BY BDL Rear Caliper - 73-80BT - Clear Anodized GMA-100

If you're running an older muscle car or classic with drum brakes, you know that stopping power is non-negotiable. The GMA Engineering rear caliper delivers the hydraulic performance and reliability that separates a safe driver from a liability on the track or street. Built from billet aluminum and finished with a durable clear anodize, this is a precision-engineered component that handles real-world braking demands without the guesswork of outdated OEM equipment.

This caliper is a direct replacement for the inadequate Wagner and Kelsey-Hayes die-cast units found on 1973–1980 vehicles. By upgrading to a modern design with proper bore sizing and hanger brackets included, you'll gain consistent pedal feel, reduced fade, and the confidence that your braking system matches the performance of your engine.

• Billet aluminum construction
• Clear anodized finish
• U.S.A. manufactured
• Includes hanger brackets
• Includes brake pads
• Requires 5/8" bore master cylinder
• Fits 1973–1980 rear applications
• Not compatible with imported stainless steel rotors