Yamaha XT 500 (1979) vs Yamaha SR 400 (1993-97) vs Yamaha YS 125 (2017) vs Yamaha XS 650F (1979) vs Yamaha YZF-R 125 (2008) vs Yamaha YZF 600 R6 (2007) vs Yamaha SRX 600 (1989-97) vs Yamaha XT 660X (2008) vs Yamaha XT 660Z Ténéré (2016) vs Yamaha XS 850G (1980) vs Yamaha WR 450F 2-Trac (2004) vs Yamaha YZF 600 R6 (2018)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha
Model:	XT 500	SR 400	YS 125	XS 650F	YZF-R 125	YZF 600 R6	SRX 600	XT 660X	XT 660Z Ténéré	XS 850G	WR 450F 2-Trac	YZF 600 R6
Years:	1979	1993-97	2017	1979	2008	2007	1989-97	2008	2016	1980	2004	2018
Engine:	Four stroke, single cylinder, SOHC, 2 valve	Four stroke, single cylinder, SOHC, 2 valves per cylinder.	Four stroke, single cylinder, SOHC, 2 valves	Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.	Four stroke, single cylinder, SOHC, 4 valve	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, single cylinder, SOHC, 4 valve	Four stroke, single cylinder, SOHC, 4 valve	Four stroke, single cylinder, SOHC, 4 valve	Four stroke, transverse three cylinder, DOHC, 2 valves per cylinder.	Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity:	499 cc / 30.5 cuin	399 cc / 24.3 cu-in	124 cc / 7.6 cu-in	653 cc / 39.8 cu in	124 cc / 7.6 cu-in	599 cc / 36.5 cu-in	608 cc / 37.1 cu-in	659 cc/ 40.2 cu-in	659 cc/ 40.2 cu-in	826 cc / 50.4 cu in	449 cc / 27.4 in	599 cc / 36.5 cu-in
Bore x Stroke:	87 х 84 mm	87 х 67.2 mm	52.4 x 57.9 mm	75 x 74 mm	52 × 58.6 mm	67 x 42.5 mm	96 х 84 mm	100 x 84 mm	100 x 84 mm	71.5 x 68.6 mm	95 x 63.4 mm	67 x 42.5 mm
Cooling System:	Air cooled	Air cooled	Air cooled	Air cooled	Liquid cooled	Liquid cooled	Air cooled	Liquid cooled	Liquid cooled,	Air cooled	Liquid cooled	Liquid cooled
Compression Ratio:	9.0 :1	8.5:1	10.0:1	8.4:1	10.4:1	12.4;1	8.5:1	10: 1	10: 1	9.2:1	12.5:1	13.1;1
Induction:	32mm Mikuni VM32SS carburetor	BSR33 carburetor	Fuel infection	2 x Mikuni BS38 carburetors	Fuel Injection	Fuel Injection 38mm throttle bodies	27mm Teikei 2KY27PV carburetor	Fuel injection, 44 mm throttle body	Fuel injection, 44 mm throttle body	3 x 34mm Hitachi carburetors	39mm Keihin FCR flat-slide throttle position sensor	Fuel injection with YCC-T and YCC-I
Ignition:	Magneto, CB/coil	CDI	TCI	Battery, induction coil	TCI	TCI	CDI	TCI	TCI	Battery powered triggered	Digital CDI	TCI: Transistor Controlled Ignition
Starting:	Kick	Kick	Electric & kick	Electric and kick	Electric	Electric	Kick	Electric	Electric	Electric	Electric / Kick-starter	Electric
Max Power:	32 hp / 23.5 kW @ 6500 rpm	27 hp / 17.1 KW @ 7000 rpm	7.8 kW / 10.4 hp @ 7500 rpm	39.5 kW / 53 hp @ 7200 rpm	12.6 kW / 17 hp @ 8500 rpm	124.6 hp / 91.7 kW @14500 rpm	45 hp / 34 kW @ 6500 rpm	33.8 kW / 48 hp @ 6000 rpm	33.8 kW / 48 hp @ 6000 rpm	57.7 kW / 79 hp @ 8500 rpm	58 hp / 42.3 kW @ 9000 rpm	87.1 kW / 116.7 hp @ 14500 rpm
Transmission:	5 Speed	5 Speed	5 Speed Constant Mesh	5 Speed	6 Speed	6 Speed	5 Speed	5 Speed	5 Speed	5 Speed	5 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain	O-ring Chain	Chain	Chain	Chain	Shaft	"O" ring Chain	O-ring chain
Front Suspension:	Leading axle coil spring fork	Telescopic fork	Telescopic forks	Telescopic forks	Telescopic forks	41mm upside down forks with 2-way compression damping adjustable	36mm Telescopic forks	43 mm Telescopic forks,	43 mm Telescopic forks,	Air assisted telescopic forks, 175mm wheel travel.	46mm Kayaba inverted telescopic fork, compression and rebound damping adjustable	43mm KYB telescopic forks
Rear Suspension:	Swing arm adjustable preload	Dual shocks	Bottom link swingarm	Dual shock absorbers	Swinging arm	Fully adjustable rear shock absorber with 2-way compression damping	Dual Kayaba shocks 5-way adjustable for preload	Oscillating arm standard Monocross.	Oscillating arm standard Monocross.	Swing arm 4-way adjustable damping, 99 wheel travel	Fully adjustable Kayaba single shock, 315mm wheel travel, separate speed compression adjustment	KYB® piggyback shock, 4-way adjustable
Front Brakes:	Single 160mm drum	Single disc	Single 245mm disc	Twin hydraulic discs, 267 mm	Single 292mm disc	2x 320mm discs	2x 267mm disc	Single 320mm disc 4 piston caliper	2x 298mm disc 2 piston caliper	2 x 267mm Discs, 1 piston calipers	Single 250mm disc 4 piston caliper	2x 320mm discs 4 piston calipers
Rear Brakes:	Single 150mm drum	Drum	120mm Drum	Drum	Single 230mm disc	Single 220mm disc	Single 240mm disc	Single 245mm disc 1 piston caliper	Single 245mm disc	Single 267mm disc, 1 piston caliper	Single 245mm disc 2-piston caliper	Single 220mm disc 1 piston caliper
Front Tyre:	3.00-21	3.50-19	2.75-18-42P	3.50H-19 4PR	90/80 -17	120/70 ZR17	110/70-17	120/700-17	90/90- 21	3.25-19	80/100-21	120/70 ZR17
Rear Tyre:	4.00-18	4.00-16	100/80-18-59P	4.00H-18 4PR	130/70 -17	180/55 ZR17	150/60-17	160/60-17	130/8017	4.00-18	110/100-18	180/55 ZR17
Fuel Capacity:	8.8 Litres / 2.3 US gal	12 Litres / 3.2 gal	14 Litres / 3.6 US gal	15 Litres / 4.0 US gal	13.8 Litres / 3.6 gal	17.5 Litres / 4.6 gal	15 Litres / 3.9 gal	15 Litres / 3.9 gal	22 Litres / 6.0 US gal	24 Litres / 6.3 US gal	8 Liters / 2.1 USgal	17.5 Litres / 4.5 US gal