Quaife QKE5S. Complete 4 speed synchromesh gear kit, straight cut gears for minimal power loss, closer ratios for maximum performance, needle roller bearing support for mainshaft gears. Retains standard mainshaft. These gear kits are manufactured for us exclusively by Quaife. Kits now include SKF caged needle roller mainshaft bearings and a bronze spacer.
Suitable only in late M40 gearbox casings with the larger countershaft diameter of 18.3mm
1st 2nd 3rd 4th
2.432 1.658 1.222 1:1