Suitable for all Triumph gearboxes with needle roller constant pinion bearings, including 2000 but not Stag or Sprint. Now uses a 1 x 23 spline input shaft to allow use of a wider range of clutches. It includes 3rd and 4th gear pairs and an adaptor enabling fitment to the 'big nose' or imperial 'spigoted' mainshaft. Suits lower axle ratio e.g: 4.1:1. The extra high 1st gear (part no. STR550) is not included in the kit as it needs at least a 4.3:1 rear axle ratio to make it usable. Note: Earlier version close ratio gear sets, purchased before 1999 used a 10 spline input shaft and should use clutch plates TT2702 for uprated use, or TT2704 for sprint or race use, kits purchased after 1999 are 23 spline and will require clutch plate TT2502 or TT20704 for rally use. Cannot be used in Stags or Sprints.
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