AJS Model 20 500 (1948-61) vs GIMA Gima 250 Act (1953-55) vs Honda CBR 400R (2016-17) vs Vespa 50 (N, L, R, S, SS, SR) (1963-90) vs Vespa Primavera 50 (2015-17) vs Vespa 946 Emporio Armani (2015)

Comparison technical specifications

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Make:	AJS	GIMA	Honda	Vespa	Vespa	Vespa
Model:	Model 20 500	Gima 250 Act	CBR 400R	50 (N, L, R, S, SS, SR)	Primavera 50	946 Emporio Armani
Years:	1948-61	1953-55	2016-17	1963-90	2015-17	2015
Engine:	Four stroke, parallel twin cylinder, OHV. 2 valve per cylinder, Crankshaft: 3-saved plain bearing / roller bearing	Four stroke	Four stroke, parallel-twin, DOHC; 4 valves per cylinder	Two stroke, single cylinder	Four stroke, single cylinder, SOHC, 4 valve, catalytic converter	Four stroke, single cylinder, catalytic converter, EFI, SOHC, 3 valves
Capacity:	498 cc / 30.4 cu in	250 cc /15.26 cu in	399 cc / 24.3 cu-in	49.8 cc / 3.0 cub in	49 cc / 3 cub in	155 cc / 9.5 cub in
Starting:	Kick	Kick	Electric	Kick start	Electric	Electric
Transmission:	4 Speed	4 Speed	6 Speed	3 Speed mesh gears	CVT	CVT, twist and go
Final Drive:	Chain	Chain	O-ring-sealed chain	Direct drive	Belt	Belt
Front Suspension:	Hydraulic telescopic fork	Telescopic forks	41mm Telescopic fork	Hydraulic shock absorber with rubber elements	Single arm with coil spring and dual action mono shock absorber	Single link arm with coil spring and dual-action hydraulic shock absorber
Rear Suspension:	Dual chocks	Plunger	Pro-Link single shock with nine-position spring preload adjustability;	Hydraulic shock absorber	Hydraulic monoshock	Coil spring with adjustable preload, mono shock with progressive lever system
Front Brakes:	Drum	Drum	Single 320mm wave disc 2 piston calipers	Drum	Stainless steel disc, 200 mm, hydraulically operated	220 mm disc
Rear Brakes:	Drum	Drum	Single 240mm wave disc 1 piston calipers	Drum	Drum, 140 mm, mechanically operated	220 mm disc