A local innovative team of engineers in Nelson are producing racing gearbox's and casings for older British motorcycles. TT Industries who operate just around the corner from Thunderbike are headed by Bruce Verdon, who has raced in South Africa, Australia and New Zealand, displayed his gearbox's at Australian and NZ race meetings and now has geared up his manufacturing with CNC machining centres to cope with the high demand for his products. Trans Tasman Industries manufacture to order 4, 5 & 6 speed heavy duty gearboxes for use in Manx Norton, Matchless G50 or similar racing motorcycles.
They also manufacture 4 & 5 speed extra heavy duty gearboxes for use in big bore Norton Commando, Vincent HRD twins or similar high powered racing motorcycles. Using a fresh design approach, they have built a completely new and modern, quick changing & reliable gearbox. These gearboxes are available in Burman or AMC casings, and in either heat treated aluminium or magnesium. Due to the strength & reliability of these gearboxes the affordability of these gearboxes is unparalleled.