Kawasaki ZX-4R/R HEL Radial Brake Master Cylinder

Exceptional Build Quality

Every HEL radial brake master cylinder is manufactured in-house using solid billets of 6082-T6 aluminum, ensuring outstanding strength and durability. With over an hour of meticulous machining for each body, the cylinder’s bore is precisely measured during production to meet exacting standards. The result is a product that guarantees long-lasting, high-performance braking.

Revolutionary Adjustable Lever Design

The master cylinder features an innovative lever system offering three ratio options in one lever:

• 18/19, 19/19, and 20/19 ratios – tailored to your riding needs.

• Easily adjustable using a pill-shaped insert with two plugs:

  • Offset hole (near or far): Adjusts to -1 or +1 ratio.

  • Central hole: Maintains a 1:1 ratio for balanced braking.

With this flexibility, riders can fine-tune braking performance for precision, power, and comfort on demand.

Key Features

• Fully CNC-machined from 6082-T6 aluminum for premium durability.

• Adjustable lever with three braking ratios (18/19, 19/19, 20/19) from one lever and two inserts.

• Individually assembled and finished by hand for superior quality.

• Designed for high-performance braking on the Kawasaki ZX-4R/R.

Choose the HEL Radial Brake Master Cylinder for unmatched braking precision and customizable performance on your Kawasaki ZX-4R/R.

LEVER RATIOS

HEL Performance Radial Brake Master Cylinders come equipped with a fully CNC-machined black lever, offering three adjustable ratios in a single design for ultimate braking precision and customization.

All components of the brake master cylinder are available for individual purchase, with options to be added to this page in the near future.