K1 Technologies Subaru Crankshafts

  • Manufactured from forged or billet premium 4340 steel
  • Engineered specifically for high-stress racing applications
  • Nitrided for improved strength and bearing life

  • Large fillet radii for improved strength
  • Straight hole oiling system for improved lubrication
  • Size tolerances held to +/-.0001".

SUBARU EJ SERIES

Part Number Former P/N Description Stroke Main Journal
Diameter
Rod Pin
Diameter
Minimum
Rod Length
Flange Bob Weight
(Grams)
Weight
(Lbs)
Footnote
039ADD750 S750EJ20D Subaru EJ20 75mm Dual Thrust 75.000 60 52 8 Bolt 21
039ADD790 S790EJ25D Subaru EJ25 79mm Dual Thrust 79.000 60 52 8 Bolt 21
039ADD830 S830EJ25D Subaru EJ25 83mm Dual Thrust 83.000 60 52 8 Bolt 21