Vintage British Motorcycles of the 1930s
For 1931, Ariel offered the following models:
L1F31 L2F31 250cc OHV sloper, single and two-port.
LB31 248cc SV sloper
4F31 500cc square four
MF31 350cc OHV sloper
SB31 550cc SV sloper
SF31 500cc OHV sloper
SG31 500cc OHV 4-valve sloper
VF31 500cc OHV vertical, twin port.
VG 500cc OHV 4 valve, vertical engine
