Yamaha WR 250F (2011-12) vs Ducati 450 Desmo (1973-74) vs Yamaha XVS 650 V-Star Classic (2011-13) vs Yamaha YZF 1000 R1 MotoGP Lorenzo Replica (2009) vs Ducati 900SS (2000) vs Horex Regina 250 ()

Comparison technical specifications

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Make:	Yamaha	Ducati	Yamaha	Yamaha	Ducati	Horex
Model:	WR 250F	450 Desmo	XVS 650 V-Star Classic	YZF 1000 R1 MotoGP Lorenzo Replica	900SS	Regina 250
Years:	2011-12	1973-74	2011-13	2009	2000
Engine:	Four stroke, single cylinder, DOHC, 5 valve	Four stroke, single cylinder, SOHC, bevel gear driven, desmodromic	Four stroke, 70°V-twin cylinder, SOHC	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valve per cylinder, belt driven	Four stroke, single cylinder.
Capacity:	249 cc / 15.2 cu-in	435.7 cc / 26.6 cu in	649 cc / 39.6 cu-in	998 cc / 60.9 cu-in	904 cc / 55.2 cu in	350 cc / 20.8 cu-in
Bore x Stroke:	77 x 53.6 mm	86 x 75 mm	81 x 63mm	78 X 52.2 mm	92 x 68 mm	77 x 75 mm
Cooling System:	Liquid cooled,	Air cooled	Air cooled	Liquid cooled	Air cooled	Air cooled
Compression Ratio:	12.5:1	9.5:1	9.0:1	12.8:1	9.2:1	7.1;1
Induction:	Keihin FCR-MX37 flat-slide w/throttle position sensor)	Dell'Orto VHB 29 A	2x 28mm Mikuni BDS28 CV carburetors	Mikuni 45mm throttle body FI	Weber Marelli electronic fuel injection; one injector per cylinder	Carburetor
Ignition:	Digital CDI	Points and coil (electronic from 1973)	Digital TCI	TCI: Transistor Controlled Ignition	Marelli electronic	6 Volt
Starting:	Electric / Kick	Kick	Electric	Electric	Electric	Kick
Transmission:	5 Speed	5 Speed	5 Speed	6 Speed	6 Speed	4 Speed
Final Drive:	#520 Chain	Chain	Shaft	"O" ring chain	Chain	Chain
Front Suspension:	48mm Fully adjustable inverted forks	35 mm Marzocchi telescopic fork (from 1974: 35 mm Ceriani)	41mm forks	43mm inverted telescopic fork w/adjustable preload, compression damping, rebound damping;	43mm Showa GD 131 upside-down forks, preload, compression and rebound adjustable	Hydraulic telescopic forks
Rear Suspension:	Fully adjustable link Monocross	Swingarm, dual Marzocchi shocks, 3-way adjustable	Adjustable link Monocross	Single shock w/piggyback reservoir; adjustable for hi-/lo-speed compression damping, rebound damping, spring preload,	Showa GD 132 progressive linkage monoshock, preload, compression and rebound adjustable	Dual shocks
Front Brakes:	Single 250mm disc 2 piston caliper	Single 280 mm disc	Single 298mm disc	2x 310mm discs 6 piston calipers	2 x 320 mm Discs, 4 piston calipers	150mm Drum
Rear Brakes:	Single 240mm disc 1 piston caliper	150 mm Drum	200mm Drum	Single 220mm disc 1 piston caliper	Single 245 mm disc, 2 piston caliper	150mm Drum
Front Tyre:	80/100-21	2.75-18	130/90-16	120/70 ZR17	120/70 ZR17	3.50 -18
Rear Tyre:	100/100-18	3.00 x 18 or 3.25 x 18	170/80-15	190/55 ZR17	170/60 ZR17	3.50 -18
Seat Height:	980 mm / 38.6 in	735 mm / 28.9 in	710 mm / 28 in	835 mm / 32.8 in	800 mm / 31.5 in.	760 mm / 29.9 in
Dry Weight:	106 kg / 233.2 lbs	130 kg / 286 lbs	225 kg / 495 lbs	177 kg / 389.4 lb	188 kg / 414 lbs	145 Kg / 319.7 lbs
Fuel Capacity:	8 Liters / 2.1 gal	13 L / 3.4 US gal / 2.9 Imp gal	16 Litres / 4.2 US gal	18 Litres / 4.8 gal	16 L / 4.2 US gal / 3.5 Imp gal	18 Litres / 4.6 US gal