Vincent Black Shadow by Vincent's own Girdraulic blade-type girder variation that used a hydraulic damper in place of a coil spring. Another Series C change was the appearance of curved lugs for the seat stays. The brakes on Series B and Series C Black Shadows are dual single leading shoe (SLS) drums front and rear. Unlike the Rapide, the drums are not interchangeable front-to-rear on the Black Shadows. The Shadow drums are ribbed cast iron. The front drum has a small flange and is attached with five bolts, while the rear has a larger flange and is attached with ten bolts. The brakes
Vincent Black Shadow use Ferodo's MR41 linings, which was new on the Shadows. The primary instrumentation on Series B and Series C Black Shadows is a Smiths chronometric speedometer that from 1949 on was a large unit mounted almost vertically. Speedometers on domestic models are calibrated up to 150 mph, while export models are fitted with a 240 kph equivalent. Series D Black Shadows do not use the 5 inch speedometer but rather a 150 mph version of the ordinary S576/L instrument. While the Series B Rapide was not designed to be a racer, PCV felt that steady improvement was necessary and drew