GMA Brake Master Cylinder Assembly Bore

The GMA Brake Master Cylinder Assembly is a CNC-machined front brake master cylinder with lever for custom motorcycle builds. It gives you a clean, modern look on the handlebar and a dependable hydraulic brake feel. Use it as a replacement or upgrade front brake master cylinder, or as part of a custom handlebar control setup.

Key Features:

• CNC-machined aluminum construction for strength and precise fit and finish
• Clean, streamlined design suited to custom applications
• Designed to fit most 1" diameter handlebars (except dimpled bars)
• Includes the mounting clamp and lever
• Hydraulic front brake actuation
• Made in the USA

GMA Engineering builds its brake and clutch controls in the USA. Its universal-style assemblies suit builders who want to leave switches off the bars, and switch-equipped versions are also offered in the line. Choose the bore size, finish and configuration that suit your build.