Triumph 6T Thunderbird (1950-53) vs Triumph Speed Twin (2019) vs Suzuki GSX-R 400 (1986) vs Harley-Davidson Harley Davidson VRSCA V-Rod 100th Anniversary Edition (2003) vs Harley-Davidson Harley Davidson Street Glide Special 115th Anniversary (2018) vs SYM Symphony S 50 / SR 50 (2014) vs Kawasaki GPX 600R Ninja / ZX 600R (1989-93) vs Yamaha XVS 250 V-Star (2010-11) vs Harley-Davidson Harley Davidson FLHRC/I Road King Classic (2003-04)

Comparison technical specifications

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Make:	Triumph	Triumph	Suzuki	Harley-Davidson	Harley-Davidson	SYM	Kawasaki	Yamaha	Harley-Davidson
Model:	6T Thunderbird	Speed Twin	GSX-R 400	Harley Davidson VRSCA V-Rod 100th Anniversary Edition	Harley Davidson Street Glide Special 115th Anniversary	Symphony S 50 / SR 50	GPX 600R Ninja / ZX 600R	XVS 250 V-Star	Harley Davidson FLHRC/I Road King Classic
Years:	1950-53	2019	1986	2003	2018	2014	1989-93	2010-11	2003-04
Engine:	Four stroke, vertical twin, OHV	Four stoke, parallel twin, 270o crank, SOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC	Four stroke, 60° V-twin, DOHC, 4 valve per cylinder	Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder	Single cylinder, 4-stroke, SOHC	Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder	Four stroke, V-twin cylinder, SOHC, 2 valves per cylinder.	Four stroke, 45° V-Twin, Twin Cam 88® vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder
Capacity:	649 cc / 40.0 cu in	1198 cc / 73.1 cu in	398 cc / 24.3 cu-in	1130 cc / 59 cu-in	1746 cc / 107 cub in	49.5 cc / 3.0 cub in.	598 cc / 36.1 cu-in	249 cc / 15.1 cu/in	1449 cc / 88.4 cu-in
Cooling System:	Air cooled	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled	Air cooled, forced	Liquid cooled	Air cooled	Air cooled
Compression Ratio:	8.5:1 (Export), 7.0:1 (UK)	11.0:1	11.5:1	11.3:1	10.0:1	12.2:1	11.71	10.0:1	8.9:1
Induction:	1 x Amal Monobloc, 25 mm (1953: SU type MC2)	Multipoint sequential electronic fuel injection	2 x AS27VW carburetors	Sequential Port Electronic fuel injection with 53mm throttle bodies	Electronic Sequential Port Fuel Injection (ESPFI)	Electronic	4x 32mm Keihin CV carburetors	26mm Mikuni BDS26 carburetor	Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection
Ignition:	Lucas magneto	Digital	CDI	Sequential, single fire non waste spark, coil on plug	Single-fire, non-wasted, map-controlled spark ignition	CDI	Digital	TCI (Transistor Controlled Ignition)	Single-fire, non-wasted, map-controlled spark ignition
Starting:	Kick	Electric	Electric	Electric	Electric	Electric & kick	Electric	Electric	Electric
Transmission:	4-Speed constant mesh	6-Speed	6 Speed, constant mesh	5 Speed	6 Speed	CVT	6 Speed	5 Speed	5 Speed
Final Drive:	Chain, 101 links	Chain, X-ring	Chain	Belt	Belt	Belt	Chain	Chain	Belt
Front Suspension:	Telescopic fork, hydraulic damping	41mm cartridge forks	Telescopic forks	Huge 49mm telescopic forks	41.3 mm telescopic, cartridge-style damping,	Telescopic fork	38mm Telescopic with electronic anti-drive.	33 mm Telescopic fork with 140mm wheel travel.	Telescopic
Rear Suspension:	Rigid, spring loaded saddle	Twin-sided, aluminum swingarm, twin shocks with adjustable preload	Full floater swing arm, non-adjustable	Dual coil over adjustable shock	Short, air-adjustable shock,	Twin sided swing arm	Rising rate monoshock with adjustable preload and rebounding preload.	Dual shock Swinging arm with 100mm wheel travel.	Air-adjustable
Front Brakes:	SLS drum, 7 in	2 x 305 mm discs, Brembo 4-piston fixed calipers, ABS	2 x Discs, 4 piston calipers	2x 292mm discs 4 piston calipers	Caliper Type 32 mm, 4-piston fixed	Hydraulic disc, 226 mm	2x 270mm discs	Single 282mm disc	2x 292mm discs 4 piston calipers
Rear Brakes:	SLS drum, 7 in	Single 220 mm disc, Nissin 2-piston floating caliper, ABS	Single disc, 2 piston caliper	Single 292mm disc 4 piston caliper	Caliper Type 32 mm, 4-piston fixed	Disc, 226 mm	Single 130mm disc	130mm drum	Single 292mm disc 4 piston caliper
Wheelbase:	1403 mm / 55.25 in	1430 mm / 56.3 in	1425 mm / 56.1 in	1713 mm / 67.5 in	1625 mm / 64 in	1330 mm / 52.3 in.	1425 mm / 56.1 in	1490 mm / 58.7 in	1612 mm / 63.5 in
Fuel Capacity:	13.6 L / 3.6 US gal / 3.0 Imp gal (US), 18 L / 4.8 US gal / 4.0 Imp gal (UK and export)	14.5 Litres / 3.8 US gal	15 Litres / 3.96 US gal / 3.3 Imp gal	15 Litres / 4.0 US gal	22.7 Litres / US 6.0 gal	5.5 L / 1.5 US gal	19.5 Litres / 5.1 US gal	9.5 Liters / 2.5 US gal	18.9 Litres / 5.0 US gal