Used once, fork mounting, 50mm, perfect condition, with original box and brakehose front to rear
HEL Performance Thumb brake, unique thumb brake made from solid 6082 aluminum.
Offers the option to operate the rear brake with much more feeling from the handlebars (using thumb controls).
With a thumb brake you can operate the rear brake with much more feeling, allowing you to control the gyroscopic effect of the rear wheel much better at high speeds and heavy braking.
Piston diameter is 13 mm.