BMW C 650 GT (2012-13) vs Yamaha MT-01 Kenny Roberts Design (2007) vs Yamaha XS 650 Midnight Special (1981) vs Yamaha XJ 550R Sega (1981) vs Kawasaki Z 900LTD (1976) vs Yamaha XS 400 (1977-78) vs Yamaha RD 125 (1977) vs Yamaha RD / RZ 125LC (1981-82)

Comparison technical specifications

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Make:	BMW	Yamaha	Yamaha	Yamaha	Kawasaki	Yamaha	Yamaha	Yamaha
Model:	C 650 GT	MT-01 Kenny Roberts Design	XS 650 Midnight Special	XJ 550R Sega	Z 900LTD	XS 400	RD 125	RD / RZ 125LC
Years:	2012-13	2007	1981	1981	1976	1977-78	1977	1981-82
Engine:	Four stroke, twin-cylinder, DOHC, 4 Valves per cylinder	Four stroke, 48° V-Twin cylinder, SOHC, 4 valves per cylinder.	Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.	Four stroke, transverse four cylinder. DOHC, 2 valves per cylinder.	Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder.	Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder	Two stroke, parallel twin	Two stroke, single cylinder
Capacity:	647 cc / 38.5 cub in.	1670 cc / 101.9 cu-in	653 cc / 39.8 cu in	528 cc / 32.2 cu-in	903 cc / 55.1 cu-in	392 cc / 23.9 cu-in	124 cc / 7.6 cu-in	123 cc / 7.5 cu-in
Bore x Stroke:	79 x 66 mm	97 x 113 mm	75 x 74 mm	57 X 51.8 mm	66 x 66 mm	69.0 x 52.4 mm	43 х 43 mm	56 х 50 mm
Compression Ratio:	11.6:1	8.36:1	8.5:1	9.5:1	8.5:1	9.2:1	6.8:1	6.4:1
Induction:	Fuel injection BMS-E, 38mm Throttle valve	Twin-bore fuel injection (FI)	2 x Mikuni BS34SU carburetors	4x 28mm Mikuni carburetors	4x 26mm Mikuni VM26SS	2x Mikuni BS32 carburetors	2x 18mm Teikei carburetors	24mm Mikuni carburetors
Starting:	Electric	Electric	Electric and kick	Electric	Electric	Electric & kick	Kick	Kick
Max Power:	44 kW / 60 hp @ 7500 rpm	66.3 kW / 90 hp @ 4750 rpm	39.5 kW / 53 hp @ 7200 rpm	37 kW / 50 PS @ 9000 rpm	82 hp / 59.8 kW @ 8500 rpm	36 hp / 26.8 kW @ 8100 rpm	17 hp / 12.4 kW @ 8500 rpm	20 hp / 15.5 kW @ 9500 rpm
Max Torque:	66 Nm / 6.7 kgf-m / 48.7 lb-ft. @ 6000 rpm	150.1Nm / 110.7lb-ft @ 3750rpm	54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 5500 rpm	41.9 Nm / 4,3 m-kg @ 7500 rpm	73.5 Nm / 52.8 lb-ft @ 7000 rpm	3.3 kgf-m / 23.8 lb-ft @ 8000 rpm	1.3 kgf-m @ 8000 rpm	1.6 kgf-m / 16 Nm @ 9250 rpm
Transmission:	CVT (continuously variable transmission)	5 Speed	5 Speed	6 Speed	5 Speed	6 Speed	5 Speed	6 Speed
Front Suspension:	System Upside down fork Ø 40 mm / 1.6 in.	Inverted telescopic fork;	Telescopic forks	Telescopic coil spring forks	36mm Telescopic forks	Telescopic fork	28 mm telescopic forks	32mm Telescopic forks
Rear Suspension:	System Cast single swingarm.	Swingarm with fully adjustable single shock;	Dual shock absorbers	Swinging arm with dual dampers adjustable for preload	Dual shock, 5-way preload adjustment	Dual shocks swing arm, preload adjustable	Dual rear shock pre-load adjustable	Monocross linkage 6-way preload adjustment
Front Brakes:	2x 270mm discs 2 piston caliper, ABS	2x 320 mm discs 4 piston calipers	Twin hydraulic discs, 267 mm	2x 267mm discs	Single 296mm disc 2 piston caliper	Single disc	Single240mm disc	Single 245mm disc
Rear Brakes:	Single 270mm disc 2 piston caliper, ABS	Single 267 mm disc 1 piston caliper	Single hydraulic disc, 267 mm	182mm Drum	Single 277mm disc	Drum	130 mm Drum	130mm Drum
Front Tyre:	120/70 R15	120/70 ZR18	3.50S-19	3.25-19	3.25H-19	3.00-18	2.75-18	2.75-18-4PR
Rear Tyre:	160/60 R15	190/50 ZR17	130/90S-16	110/ 90-16	4.00S-16	3.50-18	3.00-18	3.00-18-6PR
Fuel Capacity:	16 Litres / 4.2 US gal.	15 Litres / 3.2 gal	11.5 Litres / 3.0 US gal	15 liters / 3.9 US gal	18 Litres / 4.7 gal	14 Litres / 3.7 US gal	11.5 Litres / 3.04 US gal	13 Litres / 3.4 US gal