A two way adjustable clutch and brake lever. Adjustable for both leverage and grip reach.
The main advantage over ordinary adjustable levers is that the adjustment can
be made with such ease that you can use your index finger without having to
let go of the handlebars, which can be useful in racing conditions.
The 21-137 lever fits the 21-005,
-006, -007 and -011 master cylinders.