GMA Brake Caliper Pistons

GMA Brake Caliper Pistons

A seized or worn piston is usually what turns a caliper from a precision hydraulic component into an expensive weight. GMA replacement pistons restore the smooth, friction-free actuation that new calipers deliver – machined to the same tolerances as the originals so the seals seat correctly and the caliper returns full function without the cost of a replacement unit.

Key Features

• Replacement pistons for GMA “A”, “B”, and “F” brake calipers
• Machined to factory bore tolerances for proper seal seating and hydraulic function
• Sold as matched sets – 2 pistons for A and B calipers, 4 pistons for F calipers
• Direct replacement for seized or worn GMA caliper pistons

Technical Specifications

• Application: GMA “A”, “B”, and “F” brake calipers
• Set Size: 2 pistons (A, B calipers) or 4 pistons (F caliper)
• Made in: USA

Fitment Notes

• Select the correct piston set for your specific GMA caliper type – piston dimensions vary between caliper models
• Replace O-ring seals when installing new pistons to restore full hydraulic integrity
• Review the Fitment tab for the complete caliper compatibility breakdown