Park Tool GSC-4 Cassette Cleaning Brush (Blue)

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The Park Tool GSC-4 cassette cleaning brush utilizes a unique angled shape that contours to cassette cogs and freewheels to scrub away dirt and debris. 


  • Plastic brushes used for cleaning your drivetrain and bike to keep it sparkling and operating properly
  • Saves from wear and tear on drivetrain
  • A clean bike is a happy bike

This product was added to our catalog on October 8, 2021

Eric Yonda
Verified Owner
Wednesday, May 17 2023 (9 months ago)
Park Tool GSC-4 Cassette Cleaning Brush (Blue)
one of the better cassette cleaning brushes available. doesn't get into all the little spaces but it's robust enough to handle serious scrubbing without deforming and the curve makes it hug the cassette very nicely.