Park Tool GSC-3 Drivetrain Cleaning Brush – Dual-Sided for Cassettes & Derailleurs
The Park Tool GSC-3 is a precision cleaning tool designed to tackle the hardest-to-reach grime on your drivetrain. This dual-sided brush features long, narrow, stiff bristles that are perfect for scrubbing between tightly spaced cassette cogs, along with a slim, contoured end that reaches into derailleur pulley wheels and other compact areas.
Whether you're performing routine cleaning or a deep drivetrain scrub, the GSC-3 helps remove stubborn grit, grime, and debris without damaging components—making it a must-have tool for mechanics and riders alike.
Located on Long Island in Wantagh, NY, Brands Cycle & Fitness was voted one of the top six bike stores in the country by Bicycling Magazine. Our staff of 60 to 110 employees (seasonally) wants to make your cycling and home fitness experiences as convenient and enjoyable as possible. Shop with us online, or come down and see us seven days a week.
For more than fifty years, we've been proud to be your resource for all things cycling. We hope to meet you or see you again soon!