Triumph Transmission Specialists
Expertise that has kept a generation of Triumph owners on the road and track.
Reconditioned Units
All prices and services listed below are based upon the customer supplying their own unit to rebuild, or a suitable exchange unit. Surcharges will apply if parts outside the scope of a general rebuild are unfit for reuse.
All units must be built to our specification to validate warranty.
Gearboxes
TR2-3A 3-Synchro Gearbox
TR3B-6, Stag, 2000/2500 & Dolomite Sprint 4-Synchro Gearbox
TR3B-6, Stag, 2000/2500 & Dolomite Sprint 4-Synchro Gearbox
From £650 + VAT
TR3B-6, Stag, 2000/2500 & Dolomite Sprint 4-Synchro Gearbox
TR3B-6, Stag, 2000/2500 & Dolomite Sprint 4-Synchro Gearbox
TR3B-6, Stag, 2000/2500 & Dolomite Sprint 4-Synchro Gearbox
All of our 4 Synchro gearboxes are uprated to our in-house specification. This includes: Uprated steel bushes, uprated laygear + new layshaft, uprated second gear + thrust washer and an additional uprated clutch cross shaft securing bolt. From
£750+ VAT
Herald, Spitfire, GT6, Vitesse, Dolomite (ex. Sprint) & TR7 4 Speed Gearbox
Herald, Spitfire, GT6, Vitesse, Dolomite (ex. Sprint) & TR7 4 Speed Gearbox
Herald, Spitfire, GT6, Vitesse, Dolomite (ex. Sprint) & TR7 4 Speed Gearbox
All "Small platform" Triumph gearboxes are rebuilt to an improved specification. This includes a full overhaul of the selector mechanism. From £650 + VAT
Top Cover / Gearchange Remote (TR-2-6, Stag, 2000/2500 & Dolomite Sprint)
Herald, Spitfire, GT6, Vitesse, Dolomite (ex. Sprint) & TR7 4 Speed Gearbox
Herald, Spitfire, GT6, Vitesse, Dolomite (ex. Sprint) & TR7 4 Speed Gearbox
An often overlooked component essential to a well functioning gearbox. Our reconditioned remotes include all new; welch plugs, detent springs, inhibitor/reverse light switches, and uprated square section selector shaft seals.
From £95 + VAT
Overdrives
A Type Overdrive
A Type Overdrive
A Type Overdrive
From £450 + VAT
D Type Overdrive
A Type Overdrive
A Type Overdrive
From £400 + VAT
J Type Overdrive
A Type Overdrive
J Type Overdrive
From £400 + VAT
Differentials
TR4A-6 IRS Differential
TR4A-6 IRS Differential
TR4A-6 IRS Differential
All of our IRS differentials are built to original Triumph specification with original Churchill tools. All rebuilds include: New Crownwheel & Pinion set, All new OE quality bearings, as new input and output flanges and a drain plug (drilled and fitted). From £900+ VAT
TR2-4 Live Axle
TR4A-6 IRS Differential
TR4A-6 IRS Differential
All live axles are built to original Triumph Specification with original Churchill tools. All rebuilds include: New Crownwheel & Pinion, All new OE quality bearings, as new input flange and a drain plug fitted if there's not one not already present. From £900 + VAT
Spitfire, GT6, Vitesse, Herald & TR7 IRS Differentials
Spitfire, GT6, Vitesse, Herald & TR7 IRS Differentials
Spitfire, GT6, Vitesse, Herald & TR7 IRS Differentials
All of our IRS differentials are built to original Triumph specification with original Churchill tools. All rebuilds include: New Crownwheel & Pinion set, All new OE quality bearings, as new input and output flanges and a drain plug (drilled and fitted). From £750 + VAT
Limited Slip / ATB conversions
Spitfire, GT6, Vitesse, Herald & TR7 IRS Differentials
Spitfire, GT6, Vitesse, Herald & TR7 IRS Differentials
Whether you intend to use the car purely on the road, for track days or for competition. We can supply you with the ideal LSD or ATB for your needs. A range of brands are available. POA
Commissioned by TR Spares Development Fund
Early TR2 Thermostat Housing
Newly produced, ready to fit.
The original spec part for all TR2s pre TS1201
Very limited stock - order yours now!
Trusted & Experienced
Trusted & Experienced
Trusted & Experienced
With nearly 50 years experience, Pete Cox has shaped the Triumph spares industry and provided second to none mechanical work for customers all over the world.
Competition Spec.
Trusted & Experienced
Trusted & Experienced
Peter Cox has provided track proven transmission solutions for any Triumph for decades. Including up-rated gearbox internals, Limited slip conversions and final drive ratio conversions.
Quality Assured
Trusted & Experienced
Quality Assured
With many years experience in spares development and R&D for Triumph TRs - we can guarantee that all of our work is carried out to the highest standard, and using methods that have stood the test of time.
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