Gearboxman-designed uprated gearkits are exclusively available from Gearboxman.

Borg-Warner T5
From £1,848.00
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- Heavy duty semi-helical design
- Synchromesh engagement
- Constructed from EN36 (9310) heat-treated steel
- Wide or close ratio
- Supplied with new steel front cover
- 5th gear runs on needle rollers
- Proven in race and rally for over 10 years.
More Info
The T5 is a gearset suitable for the Borg-Warner T5 gearbox, capable of handling the “big grunt” engines.
A gearset that should address any inherent weaknesses of this transmission.
Short or Long?
Our wide ratio kit, has the ratios of the standard Sierra Cosworth gearbox: many clients run wide power band engines, and felt that close-ratio would not be a benefit to them.
The second gearset is close-ratio (pictured). This will suit high output normally aspirated, or generally narrow power band engine applications.
See the info box on the right for these ratios and more information.
We can supply this kit fitted to a gearbox on an exchange or outright-buy basis, fit it to your ‘box, or just supply the kit – contact us for more information.
Wide ratio kit gearing:
1st: 2.915:1
2nd: 1.932:1
3rd: 1.323:1
4th: 1:1
5th: 0.8:1
Close ratio kit gearing:
1st: 2.527:1
2nd: 1.675:1
3rd: 1.259:1
4th: 1:1
5th: 0.87:1
Full Product List
part | code | price |
Close ratio gearkit T5 Borg-Warner, Type 184 (Cosworth) |
GBMT51C | £1848.00 |
Close ratio gearkit T5 Borg-Warner, Type 240 (TVR) |
GBMT51T | £1848.00 |
Wide ratio gearkit T5 Borg-Warner, Type 184 (Cosworth) |
GBMT52C | £1848.00 |
Wide ratio gearkit T5 Borg-Warner, Type 240 (TVR) |
GBMT52T | £1848.00 |