This is either an add-on or replacement part. Mag trainers have a different power curve necessitating an adjuster if you are looking to change resistance along with different workout types. Riders can change resistance levels by getting off and tightening the lever, but getting off your bike ruins the flow of the ride. The lever quickly and easily attaches to your handlebars.
Upgrade part for models 9005 and 9901.
Replacement part for models 9906 and 9902.
|Manufacturer's Part #||9703|