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Park Tool GSC-3 Drivetrain Cleaning Brush

Item Description

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.

  • Dual-sided design targets both wide and narrow drivetrain areas
  • Long, stiff bristles clean between close cassette cogs
  • Slim contoured end reaches into derailleur pulley wheels and small crevices
  • Ideal for cleaning modern, tightly spaced 10–13-speed drivetrains
  • Compact size makes it easy to store in tool kits or travel packs
  • Tool Type: Drivetrain cleaning brush
  • Compatibility: All cassette and derailleur types
  • Bristle Material: Stiff synthetic fiber
  • Design: Dual-sided with precision tip and brush
  • Use: Ideal for drivetrain detailing and deep cleaning

About Us

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!





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