Transform your clutch to an easy to pull design without making it slip. The patented BDL ball-bearing lock-up clutch design works with 45 5/16" steel balls and fits with the stock diaphragm spring and spring retainer in 2013 thru 2017 models with the OEM or Screamin' Eagle hydraulic control on the standard 6-stud clutch (does not fit with 3-stud "Assist & Slip" clutch). Comes complete with a 30% thicker and stronger diaphragm for use in super tuned monster motors.