Yamaha TX 650-III (1980) vs Yamaha SR 400 (2010-11) vs Yamaha TDR 250 (1989) vs Yamaha XMAX 125 (2006-08) vs Yamaha WR 250R (2014) vs Yamaha MT 25 (2017-18) vs Yamaha YZF R6S (2008-09) vs Yamaha YBR 125 (2010-) vs Yamaha YZF1000 R1 (2003) vs Yamaha RD 350 (1973)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha
Model:	TX 650-III	SR 400	TDR 250	XMAX 125	WR 250R	MT 25	YZF R6S	YBR 125	YZF1000 R1	RD 350
Years:	1980	2010-11	1989	2006-08	2014	2017-18	2008-09	2010-	2003	1973
Engine:	Air cooled, four stroke, parallel twin cylinder.	Four stroke, single cylinder, SOHC, 2 valves per cylinder.	Liquid cooled, two stroke, parallel twin cylinder, read valve,	Four stroke, single cylinder	Four stroke, single cylinder, DOHC, 4 valve	Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, single cylinder, SOHC, 2 valves	Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.	Two stroke, parallel twin cylinder, reed valves
Capacity:	653	399 cc / 24.3 cu-in	249	124 cc / 7.6 cu-in	249 cc / 15.2 cub in.	249 cc / 15.1 cu-in	599 cc / 36.5 cu-in	124 cc / 7.6 cu-in	998 cc / 60.9 cu-in	347 cc / 21.1 cu-in
Bore x Stroke:	75 х 74 mm	87 х 67.2 mm	56.4 х 50 mm	52 x 58.6 mm	77 x 53.6 mm	60 x 44.1 mm	67 x 42.5 mm	54 x 54 mm	74 x 58 mm	64 х 54 mm
Compression Ratio:	8.4:1	8.5:1	5.9:1	11.2:1	11.8:1	11.6:1	12.8:1	10.0:1	11.8:1	6.6:1
Induction:	2x 30.+mm Mikuni	Fuel injection	2x 28mm Mikuni carbs	Fuel Injection	Electronic fuel injection	Electronic Fuel Injection	Fuel Injection	Fuel infection	Fuel injection, dual-valve throttle bodies with motor-driven secondary valves, 45 mm throttle body	2, Mikuni VM28 SC
Max Power:	50 hp @ 7500 rpm	27 hp / 17.1 KW @ 7000 rpm	46 hp @ 9500 rpm	13.8 hp / 10.1 kW @ 8750 rpm	22.6 kW / 30.7 hp @ 10,000 rpm	26.5 kW / 36 PS @ 12000 rpm	127 hp / 94.7 kW @14500 rpm	10.1 hp / 7.4 kW @ 7800 rrpm	152 hp / 110.8 kW @ 10500 rpm	39 hp / 28.5 kW @ 7500 rpm
Max Torque:	5.3 kgf-m @ 5500 rpm	27.4 Nm / 6.3 kgf-m @ 6500 rpm	3.6 kgf-m @ 8000 rpm	11.33 Nm / 8.4 lb-ft @ 6500 rpm	23.7 Nm / 2.42 kgf-m / 17.48 @ 8000 rpm	22.1 Nm / 16.7 lb-ft @ 10000 rpm	66 Nm / 48.6 lb-ft @ 1100 rpm	10 Nm @ 7400 rpm	104.9 Nm / 10.71 kg-m @ 8500 rpm	24.1 lb-ft / 32.6 Nm @ 7000 rpm
Front Suspension:		Telescopic fork	Air assisted telescopic forks7-way adjustable preload,	Hydraulic telescopic fork	Telescopic forks	Telescopic forks;	41mm upside down forks with 2-way compression damping adjustable	Telescopic forks	43mm inverted telescopic forks, preload, compression and rebound damping adjustable.	Telescopic forks
Rear Suspension:		Dual shocks	Single shock rising rate adjustable preload,	Hydraulic unit swing	Swingarm link suspension	KYBÂ® single shock. swinging arm	Fully adjustable rear shock absorber with 2-way compression damping	Bottom link swingarm	Truss-type Aluminium swinging arm Monocross, preload, compression and rebound damping adjustable.	Dual shocks
Front Brakes:	2x 297mm discs	Single disc	Single 320mm disc 2 piston calipers	Single 267mm disc	Single 250mm disc	Single 298mm disc 2 piston caliper	2x 320mm discs	Single 245mm disc	2 x 298mm discs 4 piston calipers	Single 267mm disc 2 piston caliper
Rear Brakes:	Drum	Drum	Single 210mm disc single piston caliper	Single 240mm disc	Single 230mm disc	Single 220mm disc 2 piston caliper	Single 220mm disc	Drum	Single 220mm disc 4 piston caliper	178mm Drum
Front Tyre:	3.50-19	3.50-19	110/90-18	120/70-M15	80/100 -21	110/70-17M/C 54H	120/70 ZR17	90/90-M21	120/70 ZR17	3.00-18
Rear Tyre:	4.00-18	4.00-16	120/80-17	140/70-M14	120/80 -18	140/70-17M/C 66H 5.1 in of trave	180/55 ZR17	90/90-M18	190/50 ZR17	3.25-18
Fuel Capacity:	17 Litres	12 Litres / 3.2 gal	13.6 Litres	12.5 Litres / 3.3 gal	7.6 Litres	14 Litres / 3.7 US gal	17.5 Litres / 4.6 US gal	12 Litres / 3.4 US gal	18 Litres / 4.7 gal	15.9 Litres / 4.2 gal