Norton Classic Rotary (1987) vs Triumph Bonneville (2009) vs Norton Commando 961/SS (2005-06) vs Norton C652 SM International (1999) vs Jawa 420 Prototype (1982)

Comparison technical specifications

Add bike	Remove bike	Remove bike	Remove bike	Remove bike	Remove bike
Make:	Norton	Triumph	Norton	Norton	Jawa
Model:	Classic Rotary	Bonneville	Commando 961/SS	C652 SM International	420 Prototype
Years:	1987	2009	2005-06	1999	1982
Engine:	Twin chamber, rotary	Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder	Four stroe, Parallel twin, push-rod valve, 2 valves per cylinder, OHV	Single cylinder, 4-stroke, 4-valve	Four stroke, single cylinder, SOHC, 4 valves per cylinder.
Capacity:	588 cc / 35.9 cu in	865 cc / 52.8 cu in	961 cc / 58.6 cu-in	652 cc / 39.8 cu in	420 cc / 25.6 cu in
Cooling System:	Air cooled	Air-cooled	Air cooled	Liquid cooled	Liquid cooled
Transmission:	5 Speed	5 Speed	5-Speed	5-Speed	5 Speed
Final Drive:	Chain	Chain, X-ring	Chain	Chain	Chain
Front Suspension:	Ø38 mm Telescopic forks	41mm Kayaba telescopic forks	Ø43 mm Telescopic fork, Öhlins	Telescopic fork	Hydraulic telescopic forks
Front Wheel Travel:	130 mm / 5.1 in	120 mm / 4.7 in	140 mm / 5.5 in	110 mm / 4.3 in	154 mm / 6.1"
Rear Suspension:	Twin Girling gas units, 3-way preload, Koni	Kayaba chrome spring twin shocks with adjustable preload	Twin sided swingarm, twin shocks, pre-load adjustable	Mono shock	Single shock
Front Brakes:	2 x Ø265 mm discs	Single 310 mm disc, 2 piston calipers	2 x Ø320 mm discs, 4-piston calipers, Brembo	Single disc, Ø320 mm	Single disc
Rear Brakes:	Single Ø265 mm disc	Single 255 mm disc, 2 piston calipers	Single Ø220 mm disc, 2-piston caliper, Brembo	Single disc	Expanding drum
Fuel Capacity:	23 L / 6.1 US gal	16.6 Litres / 4.4 US gal / 3.7 Imp gal	17 Litres / 4.5 US gal	20 L / 5.3 US gal	20 L / 5.2 US gal