Yamaha YX 600 Radian (1986-90) vs Harley-Davidson Harley Davidson FXRS 1340 Low Rider Custom (1986-87) vs Harley-Davidson Harley Davidson FLHTCU Electra Glide Ultra Classic (2007-08) vs Suzuki GSX 250F Across (1990-91) vs Yamaha FZR750R Genesis (1988)

Comparison technical specifications

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Make:	Yamaha	Harley-Davidson	Harley-Davidson	Suzuki	Yamaha
Model:	YX 600 Radian	Harley Davidson FXRS 1340 Low Rider Custom	Harley Davidson FLHTCU Electra Glide Ultra Classic	GSX 250F Across	FZR750R Genesis
Years:	1986-90	1986-87	2007-08	1990-91	1988
Engine:	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, 45° V-Twin, OHV, 2 valves per cylinder.	Four stroke, 45° V-Twin, Twin Cam 96 vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.
Capacity:	599 cc / 36.5 cu-in	1337 cc / 81.5 cu-in	1584 cc / 96 cu-in	249 cc / 15.2 cu in	749 cc / 45.7 cu-in
Bore x Stroke:	58.5 x 55.7 mm	88.8 x 108.0 mm	95.2 x 111.2 mm	49 x 33 mm	68 x 51.6 mm
Cooling System:	Air cooled	Air cooled	Air cooled	Liquid cooled	Liquid cooled
Compression Ratio:	10.0:1	8.5:1	9.2:1	12.5:1	11.2:1
Induction:	4X BS30 Mikuni Carburetor type	34mm Keihin carburetor	Electronic Sequential Port Fuel Injection (ESPFI)	2 x Mikuni BSW27 carburetors	4x 34mm Mikuni carburator
Ignition:	TCI	Col battery	Single-fire, non-wasted, map-controlled spark ignition	Digital	Electronic triggered
Max Torque:	51.9 Nm / 38,3 ft.-lbs @ 7500 rpm	90.8 Nm / 67 lb.-ft. @ 3600 rpm	124.7 Nm / 92 ft. lbs @ 3000 rpm	26.4 Nm / 2.7 kgf-m / 19.5 ft-lb @ 10500	7.2 kgf-m / 72 Nm @ 8250 rpm
Transmission:	6 Speed	5 Speed	6 Speed	6 Speed, constant mesh	6 Speed
Final Drive:	Chain	Belt	Belt	Chain	Chain
Front Suspension:	Telescopic forks, Coil spring, oil damper	38mm Telescopic air assistance, 175mm wheel travel.	41.3 mm telescopic, cartridge-style damping	Telescopic forks	41mm Kayaba forks 130mm wheel travel adjustable for spring preload and rebound damping,
Rear Suspension:	Swing arm, dual shock Coil spring, oil damper	Dual shocks preload adjustable, 91mm wheel travel.	Short, air-adjustable shock	Swingarm, monoshock	Monoshock single Kayaba damper 30mm wheel travel adjustable for spring preload and rebound damping,
Front Brakes:	2x 266mm discs 2 piston caliper	Single 292mm discs	2x 292mm disc 4 piston caliper	Single 300 mm disc, 2 piston caliper	2x 320mm disc 2 piston caliper
Rear Brakes:	Drum	Single 292mm disc	Single 292mm disc 4 piston caliper	Single 240 mm disc	Single 267mm disc 2 piston caliper
Front Tyre:	110/90-16-59H	MJ 90-19	MT90B16	110/70-17	120/70 VR17
Rear Tyre:	130/90-16 67H	MT 90-16	MU85B16	140/70-17	160/60 VR18
Fuel Capacity:	12. Litres / 3.2 US gal	16.0 Litres / 4.2 US gal	22 7 Litres / 6.0 US gal	12 L / 3.2 US gal / 2.6 Imp gal	20 Litres / 5.2 gal