Yamaha XT660R (2011) vs Yamaha XTZ 250 Tènèrè (2011) vs Yamaha WR 125R (2011-12) vs Yamaha WR450F (2011-12) vs Yamaha XJ6 (2011-12)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha
Model:	XT660R	XTZ 250 Tènèrè	WR 125R	WR450F	XJ6
Years:	2011	2011	2011-12	2011-12	2011-12
Engine:	Four stroke, single cylinder, SOHC, 4 valve	Four stroke, single cylinder. SOHC, 2 valve	Four stroke, forward inclined single cylinder, DOHC, 4 valve	Four stroke, Single cylinder, DOHC, 5 valves	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity:	659 cc/ 40.2 cu-in	249 cc / 15.2 cu-in	124.7	449 cc / 27.4 cu in	600 cc / 36.6 cu-in
Bore x Stroke:	100 x 84 mm	74.0 x 58.0mm	52 x 58.6 mm	95 x 63.4 mm	65.5 x 44.5 mm
Compression Ratio:	10.0: 1	9.5: 1	11.2:1	12.3:1	12.2:1
Cooling System:	Liquid cooled	Air /oil cooled	LLiquid cooled	Liquid cooled	Liquid cooled
Induction:	Fuel injection, 44 mm throttle body	Injection	Fuel injection	39mm Keihin FCR flat-slide throttle position sensor	Group injection type fuel injection
Ignition:	TCI	TCI	TCI	CDI	TCI
Starting:	Electric	Electric	Electric	Electric & kick	Electric
Max Power:	33.8 kW / 48 hp @ 6000 rpm	21 hp / 15.3 kW @ 7500 rpm	10.9 kW / 15 hp @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	78 hp / 57 kW @ 10000 rpm
Max Torque:	58.4 Nm / 5.7 kgf-m @ 5250 rpm	21 Nm / 2.09 kgf-m @ 6500 rpm	12.2 Nm / 1.24 kgf-m @ 6000 rpm	5.0 kgf-m 36.2 ft-lb @ 7500 rpm	59.7 Nm / 6.1 kgf-m @ 8500 rpm
Clutch:	Wet, multiple-disc coil spring	Wet plate	Wet, multiple coil spring	Wet, multi-disc	Wet Multi-plat disc
Transmission:	5 Speed	5 Speed	5 Speed	5-Speed, constant mesh	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain
Frame:	Steel tubular diamond frame with dual tank rails	Semi-double cradle frame	Steel double cradle	Aluminium bilateral beam	Aluminium die-cast, diamond shaped
Front Suspension:	43 mm Telescopic forks,	35mm telescopic fork	Telescopic fork	48mm Upside down telescopic fork	43mm Telescopic fork, 130mm wheel travel
Rear Suspension:	Oscillating arm standard Monocross. 200mm wheel travel	Swingarm w/rebound-adjustable single shock	Swinging arm link suspension	Swingarm, link suspension, mono shock	Swingarm Link less type Monocross, 130mm wheel travel
Front Brakes:	Single 298mm disc 2 piston caliper	Single 245mm disc	Single 248mm disc	Hydraulic single 250 mm disc 4 piston caliper	2x 298 mm discs
Rear Brakes:	Single 245mm disc 1 piston caliper	Single 203mm disc	Single 220mm disc	Single 245 mm disc 2 piston caliper	Single 245 mm disc
Front Tyre:	90/90- 21	80/90 -21	80/90-21	80/100-21 51P	120/70 ZR17
Rear Tyre:	130/80–17	120/80-18	110/80-18	120/90-18 65P	160/60 ZR17
Seat Height:	865mm / 34.1 in	865 mm / 34.0 in	930 mm / 36.6 in	960 mm / 37.8 in	785 mm / 30.9 in
Fuel Capacity:	15 Litres / 3.3 US gal	16 Litres / 4.2 US gas	8.5 Litres / 2..2 US gal	7.2 Litres / 1.9 US gal	17.3 Litres / 4.5 US gal