Layshaft Assembly for Triumph 5 Speed models. Comes with 4th & 5th Gears.
MADE IN ENGLAND
Note: 57-4900 replaces the earlier 57-4383 Layshaft High Gear that was used in the very early 5 Speed gearboxes. (The later Layshaft 5th Gear (57-4791) is longer so the 4th Gear is required also when replacing 57-4383.)