Park Tool Replacement Brush - GSC-1 Trek N Ride Simplicity and convenience at a

Simplicity and convenience at a moment’s notice

The beauty of BCAAs is that it aids in recovery after a workout as well

These are original spare parts that are delivered in pairs

The C3 chamois is constructed by using an innovative process called Carving

Park Tool Replacement Brush - GSC-1 Trek N Ride Simplicity and convenience at aDESCRIPTION The original replacement brush for the most popular cassette and drivetrain cleaning brush The GearClean Brush (GSC 1) from Park tool. This replacement helps you save money will reusing the old GearClean brush head longer and longer. The tough nylon bristles clean the derailleur and chain. Saves wear and tear on your chain and freewheel. Works great on brakes or other places where dirt collects.