The Park Tool GSC-3 Drivetrain Cleaning Brush, click to enlarge

The Park Tool GSC-3 Drivetrain Cleaning Brush, click to enlarge

Bristled end of the Park Tool GSC-3 Drivetrain Cleaning Brush cleaning cassette cogs, click to enlarge

Contoured end of the Park Tool GSC-3 Drivetrain Cleaning Brush cleaning grit out between cassette cogs, click to enlarge

Bristled end of the Park Tool GSC-3 Drivetrain Cleaning Brush cleaning derailleur pulleys, click to enlarge

Contoured end of the Park Tool GSC-3 Drivetrain Cleaning Brush cleaning grit out from derailleur pulleys, click to enlarge

Bristled end of the Park Tool GSC-3 Drivetrain Cleaning Brush cleaning between inner and outer chainrings, click to enlarge

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Item # GSC-3

/ Tools / Cleaning

Drivetrain Cleaning Brush

This dual-sided brush is specifically designed for cleaning hard-to-reach areas of the bicycle drivetrain. The long, stiff bristles of the GSC-3 are narrow enough to reach between the gears of tightly-spaced modern cassettes, while the slim contoured end is capable of picking grit and grime out of tight spaces such as derailleur pulley wheels.

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GSC-3 Drivetrain Cleaning Brush

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