Park Tool’s GSC-1 Gear Clean Brush has a unique design that enables easy cleaning. A large comfortable handle with a curved, toothed end reaches deep between gears to dislodge dirt from hard-to-reach places. Hardy nylon bristles clean the derailleur and chain, saving your chain and freewheel from wear and tear. This brush works great on all areas of your bike to uproot unwanted dirt.
Before You Order
Verify part number TL8642 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify TL8642 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.

