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Users of TTI gearboxes simply love the sheer strength, durability and ruggedness that the GTO sequential has to offer. All gearboxes are designed for lightening quick gear changes and can handle the toughest of racing conditions.

“The gearbox is just amazing, makes life so much easier when drifting.  Very nice product!” Flash, Sydney Australia, November 2019.

Torque rating: 750 f/p
4 Speed Standard Gearbox Ratios:
4 Speed: 1st: 2.47, 2nd: 1.68, 3rd: 1.25, 4th: direct
4 Speed Drift: 1st: 2.64, 2nd: 1.68, 3rd: 1.25, 4th: direct

Hover over image for ratios.

TTi GTO
4 SPEED

Torque rating: 750 f/p
5 Speed Standard Gearbox Ratios:
5 Speed: 1st: 2.47, 2nd: 1.83, 3rd: 1.44, 4th: 1.2, 5th: direct
5 Speed Drift: 1st: 2.64, 2nd: 1.83, 3rd: 1.44, 4th: 1.2, 5th: direct
5 Speed OD: 1st: 2.4, 2nd: 1.68, 3rd: 1.25, 4th: direct, 5th: 0.9

Hover over image for ratios.

TTi GTO
5 SPEED

Torque rating: 750 f/p
6 Speed Standard Gearbox Ratios:
6 Speed: 1st: 2.64, 2nd: 1.9, 3rd: 1.53, 4th: 1.31, 5th: 1.148, 6th: direct
6 Speed OD: 1st: 2.47, 2nd: 1.83, 3rd: 1.44, 4th: 1.2, 5th: direct, 6th: 0.9

Hover over image for ratios.

TTi GTO
6 Speed

Torque rating: 1000 f/p
5 Speed XHD Gearbox Ratios:
5 Speed XHD: 1st: 2.61, 2nd: 1.804, 3rd: 1.4, 4th: 1.15, 5th: direct
5 Speed XHD OD: 1st: 2.34, 2nd: 1.643, 3rd: 1.252, 4th: direct, 5th: 0.876

Only available with GM, Toyota and Nissan fixed input shafts.

Hover over image for ratios.

TTi XHD GTO
5 SPEED

Torque rating: 5 and 6 Speed 750 f/p and 5 Speed XHD 1000 f/p
5 Speed OD: 1st: 2.4, 2nd: 1.68, 3rd: 1.25, 4th: direct, 5th: 0.9
6 Speed OD: 1st: 2.47, 2nd: 1.83, 3rd: 1.44, 4th: 1.2, 5th: direct, 6th: 0.9
5 Speed XHD OD: 1st: 2.34, 2nd: 1.643, 3rd: 1.252, 4th: direct, 5th: 0.876

Image showing: RB Bell Housing (far right), Adaptor and Linkage Housing (left of gearbox), and Transfer Case supplied by purchaser (far left).

Hover over image for ratios.

TTi GTR

DESIGNED FOR PERFORMANCE

With straight-cut gears, large teeth and made of strong steel as well as a light-weight casing, the TTI GTO sequential gearbox is designed to perform.

As a result, these New Zealand-designed and manufactured sequential gearboxes are popular amongst club racers, drifters and high-end race cars worldwide – especially in Asia, Australia and Russia.

Users of TTI gearboxes simply love the sheer strength, durability and ruggedness that the GTO sequential has to offer. All gearboxes are designed for lightening quick gear changes and can handle the toughest of racing conditions. They are built as a constant mesh design with dog rings splined to the output shaft, using a rotating drum driving the fork.

Repairs and maintenance are straight forward, with all joining surfaces using O-rings rather than gaskets and silicon, and only two different casing types (3 & 5 speed use one casing, 4 & 6 use another) which makes the TTi GTO modular sequential gearboxes easy to overhaul.

The boxes are generic and can be fitted into many chassis and onto many engines using adaptors and bellhousings. Custom adaptors can be made to fit other engines if the purchasers buy or source an automatic bell housing. A single and dual shifter with linkages to the gearbox are available as accessories to the gearbox.

All gearboxes are sold with the standard engine clutch spline. TTI recommends the Tilton clutch system. A Potentiometer is supplied with each gearbox, either with a display or without if the customer wants it wired into an ECU.

Shifting with Bruce - how to change gear when using a TTi gearbox

Shifting with Bruce

Shifting with Bruce!

Posted by TTi GTO Racing Gearboxes on Tuesday, 11 July 2017

Ben Wilkinson races in his TTi gearbox car

Ben Wilkinson races in his TTI GTO gearbox...

Watch to see how Ben Wilkinson uses a TTI gearbox...

Posted by TTi GTO Racing Gearboxes on Thursday, 15 November 2018
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“I have been lucky enough to travel the world and drive some amazing race cars… but the one thing that remains consistently, and if you are there to win, you have to have great machinery … I have won 2 NZ touring car titles and both times had the right gear. TT Industries have produced a world class gearbox that is consistent and reliable and has delivered every time … and us race car drivers give it plenty.

TT Industries can match and outperform any gearbox produced anywhere around the world…and it’s made in NZ.

Give me a TTi box anyday.”

Jason Bargwanna – Bathhurst 1000 Winner. Won two NZ touring car titles with our sequential 6 speed gearbox.

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