Detroit True Trac Limited Slip Differential for Toyota 8.4″ rear



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This limited slip differential fits

Tacoma 1995-2004 with the 8.4″ diff 30 spline including SRunner (will not fit trucks with smaller diffs and Toyota eLocker)

Tacoma 2005-2015 with the 8.4″ diff 30 spline including XRunner (will not fit trucks with Toyota eLocker)

T-100 1995+ with 8.4″ diff 30 spline

Tundra 2000-2006 wtih 8.4″ diff 30 spline


Note- This is the LSD URD uses in our 2005 URD Supercharged Tacoma XRunner


Detroit Truetrac

​The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics.


The Truetrac operates as a standard or open differential under normal driving conditions, allowing one wheel to spin faster or slower as necessary. When a wheel encounters a loss of traction or the terrain changes, the gear separation forces take effect and transfer torque to the high-traction wheel. The helical-shaped gears mesh with increasing force until wheel spin is slowed or completely stopped. When the vehicle exits the low traction situation, the differential resumes normal operation.


Operation of the Truetrac is smooth, quiet and automatic. The unit will engage without any driver knowledge or action required. It also has no wearable parts and requires no maintenance, meaning less time in the garage and more on the road.


  • Helical-style pinion gears
  • Limited-slip operation
  • Smooth and automatic engagement – no driver action needed
  • Parts are maintenance free meaning more time on the road
  • Validated performance and durability



Detroit Truetrac exploded view with callouts


Year Make Model Engine
Year Make Model Engine
2005 - 2015 Toyota Tacoma V6 4.0L 1GR-FE
2005 - 2006 Toyota Tundra V6 4.0L 1GR-FE
2000 - 2006 Toyota Tundra V8 4.7L 2UZ-FE
2000 - 2004 Toyota Tundra V6 3.4L 5VZ-FE
1996 - 1998 Toyota T-100 V6 3.4L 5VZ-FE
1995 - 2004 Toyota Tacoma V6 3.4L 5VZ-FE

Additional information

Weight 30.00 lbs
Dimensions 12 × 12 × 12 in

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