Clutch Judder Definition: Clutch judder is caused by the clutch components and the flywheel not meeting concentrically or mating properly. This generally happens after the vehicle has come to a complete stop and the clutch is re-engaging. The physical juddering is the clutch irregularly gripping and slipping as the pedal is let out.  


  • Pressure plate or clutch disc is defective
  • Improper break-in procedure resulting in the disc becoming deformed
  • Clutch disc friction material contaminated during install
  • The clutch disc is bent
  • Flywheel was not properly resurfaced before the new clutch installed
  • Flywheel friction surface is not parallel with the crank flange surface
  • Flywheel has an improper surface finish
  • Flywheel has an incorrect step
  • Flywheel has severe hard spots or hot spots
  • Improper gear ratio for the tire diameter
  • Improperly tuned engine
  • Clutch linkage is worn or damaged
  • Bad leaf springs, bushings, or mounts
  • Damaged or excessively worn CV joints
  • Worn or damaged engine mounts or transmission mounts
  • Worn or misaligned u-joints in the driveshaft
  • Excessive backlash in the differential
  • Excessive driveline angle


If you have any questions about clutch judder, please contact us at tech@competitionclutch.com or call us at 1 (800) 809-6598. You can also reach us by submitting a ticket to our web portal at https://support.competitionclutch.com/support/login.