Triumph Complete 5 Speed Gearbox Cluster - 650/750cc Twins
Complete 5 speed gearbox - mainshaft and gears, layshaft and gears, selectors and camplate.To fit all Triumph 650/750cc unit twins with 5 speed gearbox - T120, TR6, T140 TR7 etc.
This cluster will also suit Triumph and BSA 750cc triples but will require mainshaft part number 57-4370.
Can also be used to convert 4 speed unit and pre-unit gearboxes to 5 speed - mechanical know-how required!
Mainshaft and gears: 57-4396, 57-4909, 57-7077, 57-4779, 57-4376, 57-4377, 57-4653
Layshaft and gears: 57-4900, 57-4647, 57-4657, 57-4654, 57-4661
Selectors and camplate: 57-4364, 57-4366, 57-4660, 57-3989, 57-4889
Made in England
OEM: 00-0066Please check the following links if you need further information on converting a 4 speed box:https://www.scribd.com/doc/23638645/5speedhttp://vintagebikemagazine.com/technical-articles/exploring-the-updating-of-a-4-speed-to-a-5-speed-transmission
We cannot accept any responsibility if it goes horribly wrong... so do your homework before you start.
Notes to add to the conversion comments:
As well as the outer cover shift quadrant (57-4374) being shorter throw than the 4 speed, the plungers are different too. The 4 speed ones are part number 57-0406, the 5 speed is 57-4403 with a different cutaway.