Barnett Heavy Duty Clutch Spring Set - 502-00-01008 for Harley Big Twin 1998-2016 Barnett Heavy-Duty Clutch Spring 502-00-01008 for Harley Replaces OEM number 37871-98A Heavy-duty springs are approximately 20% stronger than OEM and recommended for competition use Fits Harley Big Twin 1998-2016 Does not fit 2013-15 CVO/SE or 2015 FLHTC "L" models, or models with Slipper/assist Clutch, or Sportsters