This push rod has 2 retaining ring grooves, designed for OEM 5-speed or upgrade to 6-speed with EVO clutch, also fits 1998-06 OEM 5-speed with OEM clutch basket.

• This push rod kit has 1/4" length sleeve, small retaining ring.
• for 1990-97 EVO clutch with OEM 5 speed transmission, Hydraulic clutch system, (needs standard length 14.75") put retaining ring on inner groove.
• for 1990-97 EVO clutch with 6 speed transmission, Hydraulic clutch system, (needs length 15.00") put sleeve adapter between bearing and push rod, retaining ring on outer groove,  .
• for 1998-06 Twin Cam clutch with 5 speed transmission, Hydraulic clutch system, standard length (15.00") put sleeve adapter between bearing and push rod, retaining ring on outer groove.
• 6-speed transmission main shaft is 1/4" longer v.s. 5-speed main shaft, need add sleeve in between push rod and bearing.( 0.25" sleeve included)
  
• Twin Cam clutch basket is 1/4" taller v.s. EVO clutch basket.
• When install into 1998~2006 OEM Twin Cam clutch basket assembly and upgrade transmission to 6 speed usually has 1/4" thicker trap door, please order extend push rod, (15.25"), put note "need 15.25" extra long push rod"
• fit into center hole release plate with ball bearing.