Yamaha TW 125 (1999-00) vs Kawasaki KLX 300R (2000-03) vs Harley-Davidson Harley Davidson VRSCDX Night Rod Special (2013) vs Kawasaki ZX-6R Ninja (2021) vs Harley-Davidson Harley Davidson Softail Fat Boy (2016)

Comparison technical specifications

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Make:	Yamaha	Kawasaki	Harley-Davidson	Kawasaki	Harley-Davidson
Model:	TW 125	KLX 300R	Harley Davidson VRSCDX Night Rod Special	ZX-6R Ninja	Harley Davidson Softail Fat Boy
Years:	1999-00	2000-03	2013	2021	2016
Engine:	Four stroke. single cylinder.	Four stroke, single cylinder, DOHC, 4 valve	Four stroke, 60° V-twin, DOHC, 4 valve per cylinder.	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler
Capacity:	124 cc / 7.6 cu-in	292 cc / 17.9 cu-in	1247 cc / 76.1 cu in	636 cc / 38.8 cub in	1690 cc / 103.1 cub in.
Bore x Stroke:	57 x 48.8 mm	78 x 61.2 mm	105 x 72 mm	67.0 x 45.1mm	98.4 x 111.1 mm
Cooling System:	Air cooled	Liquid cooled, 50% distilled water & 50% ethylene glycol base antifreeze	Liquid cooled	Liquid cooled	Air cooled
Compression Ratio:	10.0:1	11.0:1	11.5;1	12.9:1	9.6:1
Induction:	TEIKEI Y24P/1	Keihin CVK34, constant velocity, diaphragm	Electronic Sequential Port Fuel Injection	DFI with four 38mm Keihin throttle bodies and oval sub-throttles	Electronic Sequential Port Fuel Injection (ESPFI)
Ignition:	CDI	Digital CDI	Digital CDI	TCBI with digital advance	Single-fire, non-wasted, map-controlled spark ignition
Starting:	Electric	Kick	Electric	Electric	Electric
Max Torque:	9.7Nm / 7.2 lb-ft @ 8000m rpm	28.4 Nm @ 7500 rpm	116 Nm / 86 ft. lbs@ 7250 rpm	NA	132 Nm / 13.4 kgf-m / 98.2 ft. lbs @ 3250 rpm
Transmission:	5 Speed	6 Speed	5 Speed	6 Speed	6 Speed
Final Drive:	Chain	Chain, 520, O-ring, 14-tooth front, 50-tooth rear	Belt	520 series X-ring chain	Belt
Front Suspension:	Telescopic forks	43mm inverted cartridge fork, 20-way compression damping	Huge 49mm telescopic forks	41mm inverted Showa BP-SFF fork with top-out springs, stepless compression and rebound damping, adjustable spring preload	41.3 mm telescopic, chrome dust covers
Rear Suspension:	Monoshock	Single shock, 20-way compression damping and 18-way rebound damping	Dual coil over adjustable shock	Bottom-link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount, stepless compression damping, 25-way adjustable rebound damping, fully adjustable spring preload	Hidden, horizontal-mounted, coil-over shock
Front Brakes:	Single 220mm disc	Single 250mm disc 2 piston caliper	2x 300mm discs 4 piston calipers	2 x 310mm petal rotors with dual radial-mount, Nissin four-piston, monobloc calipers and available KIBS ABS	2x Discs 4 piston caliper
Rear Brakes:	130mm Drum	Single 220mm disc 1 piston caliper	Single 300mm disc 4 piston caliper	Single 220mm petal rotor with single-piston caliper and KIBS ABS	Single disc 2 piston caliper
Front Tyre:	130/80-16	80/100-21	120/70ZR-19 60W	120/70 ZR17	140/75R17 67V
Rear Tyre:	180/80-14	100/100-18	240/40R-18 79V	180/55 ZR17	200/55R17 78V
Wheelbase:	1,280 mm / 50.4 in	1435 mm / 56.5 in	1705 mm / 67 in	1400 mm / 55.1 in	1635 mm / 64.2 in
Seat Height:	805 mm / 31.7 in	924.5 mm / 36.4 in	Laden 650 mm / 25.6 in Unladen .678 mm / 26.7 in	830.5 mm / 32.7 in	Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in
Fuel Capacity:	7 Litres / 1.9 US gal	10 Litres / 2.6 US gal	18.9 Litres / 5.0 US gal	17 Litres 4.5 US gal	18.9 Litres / US 5.0 gal