Vincent Spares Sales Portal - go to homepage
QMCA1E Quaife/Surtees Vincent Twin Cylinder 5-Speed Gearkit.
The Quaife QMCA1E gearkit is designed to fit the Vincent gearbox fitted to all twin cylinder Vincent models and converts the 4-speed unit to a modern, 5-speed design, ideal for racing, trackdays or fast cruising.
Supplied with uprated selector forks, Quaife designed camplate and modern, dog engagement gears with a high-strength tooth profile, QMCA1E features two ratio options on first gear.
Gear Ratios:
1st: 2.459
2nd: 1.611
3rd: 1.342
4th: 1.134
5th: 1.000
Optional higher 1st gear of 2.070
(possible longer lead-time, depending on stock)
Copyright © 2025 Vincent Spares. All Rights Reserved.
developed by 
