GF5R Transmission

  • Exploded View Diagram : PDF
  • View Gear Ratio Chart : PDF

The GF5R transmission has a wide range of applications. Some of these often include: drag racing (both clutchless and clutch assisted), road racing, off road, and street/strip vehicles. This transmission also has many custom applications which may include: dragsters or roadsters, import vehicles, salt flat vehicles, and open road racing. The possibilities for using this transmission are virtually endless. Like all of our models, the GF5R comes with your choice of a Long H-Pattern or Vertical Gate shifter. An air shifter can be specified as optional for drag racing applications as well.


 The G-Force GF4A
      Transmission is shown above
      with the Long HT-4000 4-Speed H Pattern Shifter.

Other available options for this model are REM® micropolished gears, needle bearing output (with included Mark Williams hardened yoke), As with any transmission it is important that the correct clutch set-up be utilized to extend the life of the gear box and driveline in general.

Most drag racing clutches today need only a few hundred pounds of pressure to perform well. The more the clutch pressure, the more impact that transfers to the gear teeth. The clutch technology utilized in a vehicle is largely dependent upon the type of transmission used. When using a high performance transmission such as the GF-5R, it is very important to consider these things.

The GF-5R 5 speed transmission is most definitely a high performance unit. This transmission has benefited from years of development and has proven its' worth in the realm high performance. With proven excessive horsepower handling capability and low price as compared to its' closest competitors, it is without question the best value in 5 speed racing transmission technology.

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