Yamaha RD 350F (1985) vs Yamaha XSR 155 (2019) vs Yamaha RD 350RR (1985) vs Yamaha YZF 600R Thundercat (1996) vs Yamaha XT 225 Serow (1985-86) vs Yamaha TT 600R (2000-01) vs Yamaha XV 250 Virago (2000-02) vs Yamaha XJ 700X Maxim-X (1985-86) vs Yamaha YZF 600 R6 (2019) vs Yamaha XJ 900F (1985-89)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha
Model:	RD 350F	XSR 155	RD 350RR	YZF 600R Thundercat	XT 225 Serow	TT 600R	XV 250 Virago	XJ 700X Maxim-X	YZF 600 R6	XJ 900F
Years:	1985	2019	1985	1996	1985-86	2000-01	2000-02	1985-86	2019	1985-89
Engine:	Two stroke, parallel twin cylinder, YPVS	Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation	Two stroke, parallel twin cylinder, YPVS	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, single cylinder, SOHC, 2 valve	Four stroke, single cylinder, SOHC, 4 Valve	Four stroke, V-Twin cylinder, SOHC, 2 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.
Capacity:	347 cc / 21.1 cu-in	155.1 cc / 9.14 cu-in	347 cc / 21.1 cu-in	599 cc / 36.5 cu-in	223 cc / 13.6 cu-in	595 cc / 36.5 cu-in	249 cc / 15.2 cu-in	697.3 cc / 42.5 cu-in	599 cc / 36.5 cu-in	891 cc / 54.3 cu-in
Bore x Stroke:	64 х 54 mm	58.0 × 58.7 mm	64 х 54 mm	62 x 49.6 mm	70 X 58mm	95 x 84 mm	49 x 66 mm	68.0 x 48.0 mm	67 x 42.5 mm	68.5 x 60.5 mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled	Air cooled	Air cooled	Liquid cooled	Liquid cooled	Air cooled
Compression Ratio:	6.2 :1	11.6:1	6.2 :1	12.0:1	9.5:1	8.5 :1	10.0:1	11.2:1	13.1;1	9.6:1
Induction:	2x 26mm Mikuni slide-needle carburetor	Fuel Injection	2x 26mm Mikuni slide-needle carburetor	4 x 36 mm Keihin CV downdraft carburetors	34mm Mikuni carburetor	26mm Dual stage Teikei Y26PV carburetor26mm Dual stage Teikei Y26PV carburetor	BDS26 Mikuni carburetor	4x Standard side-draft 33 mm Mikuni CV	Fuel injection with YCC-T and YCC-I	4x Mikuni BS36
Ignition:	Flywheel magneto CDI	TCI	Flywheel magneto CDI	Digital TCI	CDI	CDI	CDI	Hitachi TID14-35 TCI	TCI: Transistor Controlled Ignition	CDI
Starting:	Kick	Electric	Kick	Electric	Kick	Kick	Electric	Electric	Electric	Electric
Max Power:	59 hp / 43.9 kW @ 9000 rpm	14.1 kW / 19 hp @ 10000 rpm	59 hp / 43.9 kW @ 9000 rpm	72.9 kW / 100 hp @ 11500 rpm	20 hp / 15 kW @ 8000 rpm	42 hp / 31.5 kW @ 6500 rpm	23 hp / 17.1 Kw @ 8000 rpm	64.1 kW / 86 hp @ 9500 rpm	87.1 kW / 116.7 hp @ 14500 rpm	98 hp / 72 kW @ 9000 rpm
Max Torque:	40.2 Nm / 4.1 kgf-m / @ 8000 rpm	14.7 Nm / 40.8 lb-ft @ 8500 rpm	40.2 Nm / 4.1 kgf-m / @ 8000 rpm	65.7 Nm / 6.7 kgf-m / 48.7 lb-ft @ 9500 rpm	19 Nm / 14 lb-ft @ 7000 rpm	50 Nm / 36.8 lb-ft @ 5000 rpm	2.2 kgf-m / 15.9 lb-ft @ 6000 rpm	67.6 Nm / 49.9 ft-lb @ 8000 rpm	61.7 Nm / 45.5 lb-ft @ 10500 rpm	81 Nm / @ 7000 rpm
Front Suspension:	35mm Telescopic forks air assistance and variable damping	Upside-down Telescopic fork	35mm Telescopic forks air assistance and variable damping	41 mm telescopic fork adjustable preload, compression and rebound damping	Telescopic fork	Telescopic forks	Telescopic forks	38mm Telescopic fork, air, coil spring, oil damper	43mm KYB telescopic forks	37mm Telescopic fork
Rear Suspension:	Rising rate Monocross 5-way preload	Monoshock operating on a die-cast aluminium swingarm	Rising rate Monocross 5-way preload	Monoshock adjustable preload, bump and rebound	Swingarm rebound adjustable. single shock	Alloy swinging arm single shock with adjustable dampers	Dual shocks	Swing arm Coil spring, oil damper	KYB® piggyback shock, 4-way adjustable	Twin shock, Swingarm
Front Brakes:	2x 260mm disc 2 piston calipers	Single 282mm disc 2 piston caliper, ABS	2x 260mm disc 2 piston calipers	2x 300 mm Discs, 4 piston calipers	Single 220mm disc	Single 267mm disc	Single 282mm disc	2x discs 4 piston caliper	2x 320mm discs 4 piston calipers	2x 267mm discs
Rear Brakes:	Single 260mm disc 1 piston caliper	Single 240mm disc 1 piston caliper, ABS	Single 260mm disc 1 piston caliper	Single 245mm disc, 2 piston caliper	Single 110mm drum	Single 220mm disc	130mm drum	Drum	Single 220mm disc 1 piston caliper	Single 267mm disc,
Front Tyre:	90/90-18 51H	110/70 -17	90/90-18 51H	120/60-17	2.75-21	90/90-21	3.00-19	100/90-19 57H ( 90 mm depth)	120/70 ZR17	100/90-18
Rear Tyre:	110/80-18 58H	140/70 -17	110/80-18 58H	160/60-17	120/80-18	130/90-18	130/90-15	130/90-16 67H (117 mm depth)	180/55 ZR17	120/90-18
Wheelbase:	1385 mm / 54.5 in	1330 mm / 52.3 in	1385 mm / 54.5 in	1415 mm / 55.7 in	1349 mm / 53.1 in	1480 mm / 58.2 in	1495 mm / 58.9 in	1520 mm / 59.8 in	1375 mm / 54.1 in	1480 mm / 58.2 in
Seat Height:	790 mm / 31.1 in	810 mm / 31.8 in	790 mm / 31.1 in	810 mm / 31.7 in	810 mm / 31.9 in	945 mm / 37.2 in	685 mm / 27.0 in	760 mm / 29.9 in	850 mm / 33.5 in	780mm / 30.7 in
Fuel Capacity:	17 Litres / 4.5 US gal	10 Litres / 2.6 US gal	17 Litres / 4.5 US gal	19 Litres / 5.0 US gal / 4.2 Imp gal	8.7 Liters / 2.3 US gal	10 Litres / 2.6 US gal	9.5 Liters / 2.5 US gal	13 Litres / 3.43 US Gal	17.5 Litres / 4.5 US gal	22 Litres / 5.8 US gal