Indy Specialty Adjustable weights use slide in magnets and can be adjusted with the weights in the clutch and the clutch in the machine.
The Trail weight is what we call a full back weight which gives it fast response and an aggressive corner to corner aggressive feel
The Mountain weight has one side cut on the profile to lighten the mass of the weight that is carried above the pin line
these weights are by far the most popular for elevation riding, They provide great belt clamping pressure without feeling lazy in lower RPM.
Paired with our springs and helix you can say goodbye to excessive belt heat and failure