AJS Model 20 500 (1948-61) vs AJS Model 30 600 (1956) vs AJS R7 Track Racer (1930) vs AJS EOS 125 Mk2 (2012-14) vs AJS DD125E Mk3 (2012-14) vs AJS Tempest Roadster 125 (2017-)

Comparison technical specifications

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Make:	AJS	AJS	AJS	AJS	AJS	AJS
Model:	Model 20 500	Model 30 600	R7 Track Racer	EOS 125 Mk2	DD125E Mk3	Tempest Roadster 125
Years:	1948-61	1956	1930	2012-14	2012-14	2017-
Engine:	Four stroke, parallel twin cylinder, OHV. 2 valve per cylinder, Crankshaft: 3-saved plain bearing / roller bearing	Four stroke, pushrod parallel twin, OHV, 2 valves per cylinder,	Single cylinder, OHC	Twin cylinder, 4-stroke	Twin cylinder, 4-stroke	Single cylinder, YB 4-stroke, OHC
Capacity:	498 cc / 30.4 cu in	593 cc / 36.2 cu in	350 cc / 21.4 cub in	124 cc / 7.6 cub in	124 cc / 7.6 cub in	124 cc / 7.6 cu in
Cooling System:	Air cooled	Air cooled	Air cooled	Liquid cooled	Air cooled	Air cooled
Transmission:	4 Speed	4 Speed	Close ratio gearbox	5-Speed	5-Speed	5-Speed
Front Suspension:	Hydraulic telescopic fork	Hydraulic telescopic fork	Girder fork	Telescopic forks, USD	Telescopic forks	Telescopic forks
Rear Suspension:	Dual chocks	Dual chocks	Ridged, spring loaded saddle	Twin shock	Twin oil damped adjustable shocks	Dual shocks, coil springs