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HOME > TOYOTA > Axle parts - Steering

Longfield™ Gun Drilled 30-Spline 4340 Chromoly Super Set

Part Number 301688-1-KIT
Longfield™ Gun Drilled 30-Spline 4340 Chromoly Super Set
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Price
Your Price:  
$599.00
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Custom Lengths Standard
Plus 3"
Plus 5"
Quantity
Description

The Longfield™ Gun Drilled 30-Spline Birfields are made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers. The internals of the birfield are also made from 4340 chromoly and are dual heat treated for superior strength. The birfield has a M8 grease zerk at the end of the stub shaft and 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 Gun Drilled 30-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 axle shafts are also made out of 4340 chromoly steel.

We understand that once you upgrade your axles, the next weak link is your hub gears, so we decided to include our Chromoly Inner and Outer Hub Gears and Creeper Drive Flanges at no additional cost!

Longfield 30-Spline Super Axle Kit

Specifications:

  • Made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers
  • Birfield housing is made out of forged 4340 chromoly steel
  • Internals of our Longfield™ birfields are made out of 4340 chromoly steel and then dual heat-treated for superior strength
  • Machined spline saver to eliminate stress concentrations from the spline groove
  • Gun drilled to create grease passage through the birfield
  • M8 grease zerk at the end of stub shaft for easy greasing of the birfield
  • The axle shafts are also made out of 4340 chromoly steel

Application Data

  • 1979-1985 Toyota Pickup (All Engines)
  • 1984-1985 Toyota 4Runner (All Engines)
  • Toyota Solid Front Axle Housing
  • Rock Assault™ Front Axle Housing



P/NDescriptionShort SideLong Side
301688-1-KITLongfield 30-Spline Super Set15-7/16"31-7/16"
301724-1-KITLongfield 30-Spline Super Set, +318-7/16"31-7/16"
301725-1-KITLongfield 30-Spline Super Set, +519-7/16"32-7/16"



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