Longfield FJ80 Gun Drilled 24-Spline Super Set. The birfield has is gun drilled through the center of the birfield to allow for grease to pass through the zerk fitting and into the internals. This will save you precious time by eliminating the need to disassemble your axle just to service your birfields.

The FJ80 Gun Drilled 24-Spline Birfields also have a shallow relief near the splines on the stub shaft known as a Machined Spline Saver.

The Machined Spline Saver eliminates stress concentrations caused by grooving from the tool that makes the splines on the stub shaft. The stress concentration from the spline groove is a common failure point on birfield stub shafts.

The stub shaft of the Birfield has dual snap ring grooves to accommodate FJ80s with short and long drive flanges. ABS Tone Rings will allow you to install the Longfield FJ80 Gun Drilled 24-Spline Super Set on both ABS and Non-ABS FJ80 applications.

Extended dust caps allow you to use these birfields on 1990-1993 FJ80 models that use short drive flanges. No other kit on the market can compare. 1990-1993 models with short drive flanges will need to obtain the taller drive flanges to be able to reuse the OEM grease caps or get a set of our FJ80 Extended Dust Caps.

  • Made out of 100.0 percent chromoly and are precision polished to remove any imperfections that may cause stress risers
  • Birfield housing is made out of forged 4340 chromoly steel
  • Birfield stub shaft dual snap ring grooves to accommodate FJ80s with short and long drive flanges
  • Internals of our Longfield birfields are made out of 4340 chromoly steel
  • Dual heat-treated for superior strength
  • Gun drilled to create grease passage through the birfield
  • M8 grease zerk at the end of stub shaft for easy greasing of the birfield
  • Includes FJ80 ABS Tone Ring
  • Includes extended drive flange dust caps


  • Warranty: 12 Month Limited Warranty
  • Sold As: Kit
  • Material: Chromoly Steel
  • Finish: Polished
  • Color: Grey
  • Spline: 24-Spline
  • Fits: 1990-1997 Toyota Land Cruiser, 1995-1997 Lexus LX 450

Additional information

Weight 38 lbs
Dimensions 36 × 6 × 6 in