Yamaha XS 250 Special (1980-81) vs Yamaha YZF 600R Thundercat (2005-07) vs Yamaha XVS 650 V-Star Classic (2008-10) vs Yamaha SR 400 (1988-92) vs Yamaha XVS 1100 V-Star Silverado (2010-11) vs Cagiva Elefant 900AC CAT (1993) vs Harley-Davidson Harley Davidson FLHR Road King Special (2017-18)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Cagiva	Harley-Davidson
Model:	XS 250 Special	YZF 600R Thundercat	XVS 650 V-Star Classic	SR 400	XVS 1100 V-Star Silverado	Elefant 900AC CAT	Harley Davidson FLHR Road King Special
Years:	1980-81	2005-07	2008-10	1988-92	2010-11	1993	2017-18
Engine:	Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, 70°V-twin cylinder, SOHC	Four stroke, single cylinder, SOHC, 2 valves per cylinder.	Four stroke, 75° V-twin cylinder SOHC, 4 valve per cylinder	Four stroke, 90° “L” twin cylinder, SOHC, desmodromic 2 valve per cylinder	Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Capacity:	248 cc / 15.2 cu-in	599 cc / 36.5 cu-in	649 cc / 39.6 cu-in	399 cc / 24.3 cu-in	1063 cc / 64.8 cu-in	904 cc / 55.1 cu-in	1746 cc / 107 cub in.
Bore x Stroke:	55 х 52.4 mm	62 x 49.6 mm	81 x 63mm	87 х 67.2 mm	95 x 75 mm	92 x 68 mm	100 x 111 mm / 3.937 x 4.374 in
Cooling System:	Air cooled	Liquid cooled	Air cooled	Air cooled	Air cooled	Air cooled	Air cooled
Compression Ratio:	9.3:1	12.0:1	9.0:1	8.5:1	8.3:1	9.2:1	10.0:1
Induction:	2x 32mm Mikuni carburetors	4 x 36 mm Keihin CV downdraft carburetors	2x 28mm Mikuni BDS28 CV carburetors	BSR33 carburetor	Carburetors	Mikuni BDST 38 carburetors	Electronic Sequential Port Fuel Injection (ESPFI)
Ignition:	Coil and cb	Digital TCI	Digital TCI	CDI	TCI	Marelli electronic inductive discharge	Single-fire, non-wasted, map-controlled spark ignition
Starting:	Kick	Electric	Electric	Kick	Electric	Electric	Electric
Max Torque:	2.1 kgf-m / 15.2 lb-ft @ 8500 rpm	65.7 Nm / 6.7 kgf-m / 48.7 lb-ft @ 9500 rpm	50.9 Nm / 37.5 lb-ft @ 3000 rpm	27.4 Nm / 6.3 kgf-m @ 6500 rpm	85 Nm / 62.7 lb-ft @ 2500 rpm	78 Nm / 57.5 lb-ft @ 5250 rpm	151 Nm / 111.4 ft/lb @ 3250 rpm
Transmission:	6 Speed	6 Speed	5 Speed	5 Speed	5 Speed	6 Speed	6 Speed
Final Drive:	Chain	530 O-ring chain OEM sprocket sizes per tooth Front= 15 Back= 47	Shaft	Chain	Shaft	Chain	Belt
Front Suspension:	Telescopic forks	41 mm telescopic fork adjustable preload, compression and rebound damping	41mm forks	Telescopic fork	41mm telescopic front fork	45mm Showa upside down telescopic forks	49 mm forks, Dual Bending Valve
Rear Suspension:	Dual shocks, swing arm, 5-position preload adjustable	Monoshock adjustable preload, bump and rebound	Adjustable link Monocross	Dual shocks	Link-type, preload-adjustable single rear shock	Rising rate box, monoshock adjustable for preload	Premium low height hand-adjustable rear shocks
Front Brakes:	Single 267mm disc	2x 300 mm Discs, 4 piston calipers	Single 298mm disc	Single disc	2x 298mm discs 2 piston calipers	2x 282mm discs 4 piston calipers	2 x 300 mm disc, caliper type 32 mm, 4-piston fixed, dual floating rotors
Rear Brakes:	160mm Drum	Single 245mm disc, 2 piston caliper	200mm Drum	Drum	Single 282mm disc 1 piston caliper	Single 240mm disc 4 piston caliper	Single 300 mm, caliper type 32 mm, 4-piston, fixed rotor
Front Tyre:	3.00-18	120/60-17	130/90-16	3.50-19	130/90-16	100/90-19	130/60B19 61H
Rear Tyre:	120/90 x 16	160/60-17	170/80-15	4.00-16	170/80-15	140/80-17	180/55B18 80H
Wheelbase:	1375 mm / 54.1 in	1415 mm / 55.7 in	1626 mm / 64.0 in	1410 mm / 55.5 IN	1640 mm / 64.6 in	1570 mm / 61.8 in	1625 mm / 64 in
Seat Height:	770 mm / 30.3 in	810 mm / 31.7 in	710 mm / 28 in	790 mm / 30.9 in	710 mm / 28 in	857 mm / 33.7 in	Unladen 695 mm / 27.4 in. Laden 671 mm / 26.4 in
Fuel Capacity:	14 Litres / 3.7 US gal	19 Litres / 5.0 US gal / 4.2 Imp gal	16 Litres / 4.2 US gal	12 Litres / 3.2 gal	17 Litres / 4.4 US gal	22 Litres / 5.8 US gal	22.7 Litres / 6.0 US gal