5th Gear Overdrive Ratio Set – LandCruiser 76, 78, 79 Series (from .736 to .811)

AUD $1,195.00 (Excl. Tax AUD $1,086.36)

In stock

To Suit – Toyota LandCruiser

  • GRJ76, GRJ78 (7/2009-8/2016)
  • HDJ78, HZJ79 (8/1999-8/2016)
  • VDJ76, VDJ78, VDJ79  (1/2007-8/2016)
SKU: 33421-MOD79K
Terrain Tamer

5th Gear Overdrive Ratio (from .736 to .811) to suit Toyota LandCruiser 76, 78, 79 Series

Installing our 5th Gear Overdrive to your 70 series Toyota LandCruiser helps reduce engine noise and fuel consumption while increasing engine life by reducing the RPM by approx 400rpm from the factory 2400 when driving at 100km/h in 5th Gear. (Note RPM to speed will be different with larger wheel/tyre sizes)


Terrain Tamer boasts over 50 years of hard-earned expertise and innovation in the aftermarket 4WD parts industry, with their products being sold in more than 80 countries worldwide.

Each part undergoes rigorous research, development, and testing to ensure it meets or exceeds the quality and strength of its original equipment equivalent. Terrain Tamer parts are often designed to be even stronger and tougher to withstand the challenging conditions of Australia’s harsh conditions.

As a result of their proven reliability, Terrain Tamers parts are used in various applications, including mining, military, farming, emergency services, and by recreational 4WD enthusiasts worldwide.



  • Made in Japan to Terrain Tamer’s high standards
  • Made from 56-60 strength Hardened Rockwell Steel
  • Provides a 400rpm Reduction in 5th Gear
  • Designed as a direct replacement to the factory gears
  • 12-month manufacturer warranty


To Suit – Toyota LandCruiser

  • GRJ76, GRJ78 (7/2009-8/2016)
  • HDJ78, HZJ79 (8/1999-8/2016)
  • VDJ76, VDJ78, VDJ79  (1/2007-8/2016)


Part No.

  • Terrain Tamer – 33421-MOD79K

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