Yamaha XJ 750R (1981-82) vs Yamaha RD 200 (1977-78) vs Yamaha XS 1100G (1981) vs Yamaha TZR 250RS (1993) vs Honda VFR 800Fi (1998) vs Yamaha XJ 650 Seca (1981) vs Honda NC 750X / DCT (2021) vs Yamaha XJ 750 Seca (1981-83)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha	Yamaha	Honda	Yamaha	Honda	Yamaha
Model:	XJ 750R	RD 200	XS 1100G	TZR 250RS	VFR 800Fi	XJ 650 Seca	NC 750X / DCT	XJ 750 Seca
Years:	1981-82	1977-78	1981	1993	1998	1981	2021	1981-83
Engine:	Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.	Two stroke, torque induction, parallel twin	Four stroke transverse four cylinder, DOHC, 2 valves per cylinder.	Two stroke, 90° V-Twin cylinder, read valve induction	Four stroke, 90°V-four cylinder, DOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder,	Four stroke , parallel twin, SOHC, 4 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder
Capacity:	749 cc / 45.6 cu-in	195 cc / 11.8 cu-in	1101 cc / 67.2 cu-in	249.7 cc / 15.2 cu-in	781.7 cc / 47.7 cu-in	653 cc / 39.8 cu-in	745 cc / 45.4 cu-in	749 cc / 45.6 cu-in
Bore x Stroke:	65 х 56.5 mm	52 х 46 mm	71.5 x 68.6 mm	56 x 50.7 mm	72 x 48 mm	63 х 52.4 mm	77 x 80mm	65 х 56.4 mm
Cooling System:	Air cooled	Air cooled	Air cooled	Liquid cooled	Liquid cooled	Air-cooled	Liquid-cooled	Air cooled
Compression Ratio:	9.5:1	7.1:1	9.2:1	7.5:1	11.6 1	9.2:1	10.7:1	9.2:1
Induction:	4X 32mm Hitachi CV	2x Y20P Carburetors	4x Mikuni BS 34SS Carburettor	2x Mikuni flatside carburetor	PGM-FI electronic fuel injection	4x 32mm Hitachi carburetors	PGM-FI electronic fuel injection	4x 34mm Mikuni Carburetors
Ignition:	Transistorized	Battery coil	TCI additional vacuum adjusted! / electric kick starter - Witch is separated from the engine, for emergency mounting only	Microcomputer controlled	Digital transistorized with electronic advance	Transistorized	Computer-controlled digital transistorised with electronic advance	Transistorized
Starting:	Electric	Electric & Kick	Electric	Kick	Electric	Electric	Electric	Electric
Max Power:	81 hp / 59.6 kW @ 9000 rpm	20 hp / 14.7 kW @ 8000 rpm	95 hp / 70.8 kW @ 8500 rpm	45 hp / 33.6 kW @ 9500 rpm	110 hp / 81 kW @ 10500 rpm	71 hp / 51.8 kW @ 9400 rpm	43.1 kW / 57.8 hp @ 6750 rpm	82 hp / 59.9 kW @ 9000 rpm
Max Torque:	48.5 Nm / 35.7 lb-ft @ 7000 rpm	1.9 kgf-m / 8.6 Nm @ 7000 rpm	9.2 kgf-m / 66.5 lb-ft @ 6500 rpm	3.8 kgf-m / 40 Nm @ 8000 rpm	82 Nm / 60.4 lb-ft @ 8500 rpm	57 Nm / 42 lb-ft @ 7500 rpm	69 Nm / 50.9 lb-ft @ 4750 rpm	67 Nm / 6.9 kgf-m @ 7500 rpm
Transmission:	5 Speed	5 Speed	5 Speed	6 Speed	6 Speed	5 Speed	6 Speed Manual / DCT: 6-Speed Dual Clutch Transmission	5 Speed
Final Drive:	Chain	Chain	Shaft	Chain	#530 O-ring-sealed chain	Shaft	Chain	Shaft
Front Suspension:	Telescopic fork, 150mm wheel travel.	Telescopic forks	Telescopic fork.	39mm Upside-down forks	41mm H.M.A.S. cartridge-type telescopic fork with preload adjustable damper	36mm Kayaba forks	41 mm telescopic forks	Telescopic forks
Rear Suspension:	Swing arm, twin shocks 96mm wheel travel.	Dual shocks	Dual shocks Swing arm, preload adjustable	Monocross linkage	Pro arm mono arm system incorporating stepless rebound-adjustable gas-charged H.M.A.S. damper with pro-link	Duel Kayaba shocks	Single monoshock damper, Pro-Link swingarm	Swing arm
Front Brakes:	2x 294mm disc 2 piston calipers	Single 245 mm disc	2x 298mm discs	2X disc 4 piston calipers	2x 296mm discs 3 piston calipers	2x 268mm disc 1 piston calipers	Single 320 mm wavy hydraulic disc 2 piston calipers and sintered metal pads	Single 269mm disc
Rear Brakes:	Drum	Drum	Single 298mm disc	Single disc 2 piston caliper	Single 256mm disc 3 piston caliper	Drum	Single 240 mm wavy hydraulic disc 1 piston caliper and sintered metal pads	Drum
Front Tyre:	100/90-18	2.75-18-4PR	3.50-19	110/70 Z17	120/70 ZR17	3.25-19	120/70-ZR17	3.25-19
Rear Tyre:	120/90-18	3.25-18-4PR	4.50-17	150/60 Z17	180/55 ZR17	120/90-18	160/60-ZR17	120/90-18
Fuel Capacity:	19 Litres / 5.0 US gal	11.5 Litres / 3.0 US gal	22 Litres / 5.8 gal	15 Litres / 4.0 gal	20.8 Litres / 5.5 US gal	19.5 Litres / 5.1 US gal	14.1 Litres / 3.7 US gal	19 Litres / 4.7 US gal