GMA Engineering 5/8 Bore Rear Master Cylinder Rebuild Kit Kelsey Hayes and Wagner Style

GMA Engineering 5/8 Bore Rear Master Cylinder Rebuild Kit Kelsey Hayes and Wagner Style

Worn internal components are the most common reason a rear master cylinder loses its firm, responsive feel without visible external damage. The GMA 5/8-bore rebuild kit supplies every part needed to restore correct hydraulic function, giving Kelsey Hayes and Wagner-style rear master cylinders a second life without replacing the entire unit.

Key Features

• Fits both Kelsey Hayes-style and Wagner-style GMA 5/8-inch bore rear master cylinders
• Includes all wear components: piston, seals, spring, and boot
• Precision-machined components maintain factory bore tolerances
• USA-made quality matched to GMA master cylinder specifications

Technical Specifications

• Application: GMA Kelsey Hayes and Wagner-style 5/8-inch bore rear master cylinders
• Includes: Piston, seals, spring, and boot
• Made in: USA

Fitment Notes

• Fits GMA 5/8-inch bore rear master cylinders of both Kelsey Hayes and Wagner style
• Verify master cylinder bore size before ordering – this kit is for 5/8-inch bore only
• Review the Fitment tab for compatible master cylinder model details