Yamaha TDR 125 (1989-92) vs Yamaha XVS 250 Drag star (2002-03) vs Matchless Silver Arrow (1929-33(specificationsfor1930m) vs Yamaha XT660R (2008)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Matchless	Yamaha
Model:	TDR 125	XVS 250 Drag star	Silver Arrow	XT660R
Years:	1989-92	2002-03	1929-33(specificationsfor1930m	2008
Engine:	Two stroke, single cylinder	Four stroke, V-twin cylinder, SOHC, 2 valves per cylinder.	V-twin cylinder	Four stroke, single cylinder, SOHC, 4 valve
Capacity:	124 cc / 7.6 cu-in	249 cc / 15.2 cu-in	397 cc / 24 cub in.	659 cc/ 40.2 cu-in
Bore x Stroke:	56 x 50.7 mm	49 x 66 mm	54 x 86 mm	100 x 84 mm
Cooling System:	Liquid cooled	Air cooled	Air cooled	Liquid cooled
Compression Ratio:	6.6:1	10.0:1	5.6:1	10.0: 1
Ignition:	Electronic	Digital CDI	Lucas magneto, KLV-0	TCI
Starting:	Electric	Electric	Kick	Electric
Transmission:	6 Speed	5 Speed	3-Speed, Sturmey Archer gearbox (from 1932: 4-speed)	5 Speed
Final Drive:	Chain	Chain	Chain	Chain
Front Suspension:	38mm Telescopic forks	Cartridge telescopic forks	Matchless centre spring girders, finger adjustment	43 mm Telescopic forks,
Rear Suspension:	Monoshock with 5-way adjustable preload	Dual shock, Swingarm	Cantilever with two springs and friction dampers under saddle	Oscillating arm standard Monocross. 200mm wheel travel
Front Brakes:	Single 282mm disc 2 piston caliper,	Single 282mm disc	203 mm / 8 in. drum, interconnected	Single 298mm disc 2 piston caliper
Rear Brakes:	Single 220mm disc 1 piston caliper.	130mm Drum	203 mm / 8 in. drum, interconnected	Single 245mm disc 1 piston caliper
Front Tyre:	100/90-18	80/100-18	3.25 x 19 in.	90/90- 21
Rear Tyre:	130/80-17	130/90-15	3.25 x 19 in.	130/80–17
Wheelbase:	1405 mm / 55.3 in	1530 mm / 58.9 in	1422 mm / 56 in.	1505 mm / 59.3 in
Ground Clearance:	270 mm / 10.6 in	150 mm / 5.9 in	152 mm / 6 in.	210 mm / 8.3 in
Fuel Capacity:	11 Litres / 2.9 US gal	11 Litres / 2.9 US gal	11.4 L / 3.0 US gal	15 Litres / 3.3 US gal