Axle Specifications

Spline Count & Outside Diameter At Differential: 
  58' - 67' - 40 Series Front & Rear - 10 spline (course), 33mm/1.31"
  68' - 97' - 40/55/61/62/80 Front & Rear - 30 spline (fine), 33mm/1.31"
  98' - 06' - 100 Series Front - 30 spline (fine), 33mm/1.31"

Spline Count & Outside Diameter At Birfield Joint: 
  58' - 68' - No birf, Ball & Claw Style Joint
  68' - 97' - 40/55/61/62/80 - 27 spline

Birfield Joint Renditions:
68 - 9/75 - Course Spline, drum brake, small shell.
9/75 - 1/79 - Fine Spline, disc brake, small shell, longer than later 79-90 birfs.
1/79 - 1/90 - Fine Spline, disc brake, larger shell, shorter than 76-79 birfs.
1/90-97 - Fine Spline, disc brake, largest shell, available with ABS toner ring.

Spline Count & Outside Diameter At Locking Hub/Hub Flange): 
  58' - 9/75' - 40/55 Series Front & Rear -  ? spline (course)
  68' - 97' - 40/55/61/62/80 Front & Rear - ? spline (fine)

Steering Arm Bolt Pattern & Shim Dimensions:

  Small Pattern (E-1/79' 40/55 Series)
  46 mm x 30 mm, 11 mm stud

  Large Pattern (1/79'-1/90' 40/55/60/70 Series & 79'-85' PU & 4Runner)
  55 mm x 30 mm, 12 mm stud

Knuckle Stud Thread & Pitch Dimensions:

  Small Pattern Knuckle
   Stud to Knuckle Casting - 11 mm x 1.50
   Top thread (Nut Thread)  - 11 mm x 1.25 

  Large Pattern Knuckle
   Stud to Knuckle Casting - 12 mm x 1.50 
   Top thread (Nut Thread)  - 12 mm x 1.25

Inner Axle Lengths (without birf attached, measured from end to end):

  40/55/70 Series Drivers Side:                 29.00"
  40/55/70 Series Passenger Side:           17.25"
  60/62 Series Drivers Side:                      31.5"
  60/62 Series Passenger Side:                17.25"
  80 Series Drivers Side:                           34.125"
  80 Series Passenger Side:                     17.75"
  PU/4Runner (Solid Axle) Drivers Side:     31.5"
  PU/4Runner (Solid Axle) Pass. Side:      15.375"

Inner Axle Lengths WITH Birfield Joint Attatched

  40/55 68'-9/75' Drum Axle Drivers Side        ?
  40/55 68'-9/75' Drum Axle Pass. Side         ? 
  40/55 9/75'-1/79' Disc Axle Drivers Side      ?
  40/55 9/75'-1/79' Disc Axle Pass. Side        ?
  40/55 1/79'-83' Disc Axle Drivers Side         ?
  40/55 1/79'-83' Disc Axle Pass. Side          ?
  60/62 80-1/90' Disc Axle Drivers Side         ?
  60/62 80-1/90' Disc Axle Pass.  Side          ?
  70 80-1/90' Disc Axle Drivers Side              ?
  70 80-1/90' Disc Axle Pass.  Side              ?
  80 1/90-97' Disc Axle Drivers Side              ?
  80 1/90-97' Disc Axle Pass. Side               ?
  PU/4Runner (Solid Axle) Drivers Side         ?
  PU/4Runner (Solid Axle) Pass. Side          ?

Birfield Joint Lengths (overall length of birfield, end to end)
80 Series W/ABS Tone Ring "Short" style      246 mm
80 Series W/ABS Tone Ring "Long" style       251 mm

Front Axle WMS Widths (Wheel Mating Surface to Wheel Mating Surface)
40/55 Series - 55"/57" (will be test measureing in the coming weeks)
PU/4Runner - 55.5"
60/62 Series - 58.5"/60" (will be test measureing in the coming weeks)
80 Series - 63.5"

MORE COMING SOON!
 
 

*See something missing, wrong, or incomplete? Please let us know!