Suzuki RG 125 Gamma (1985) vs Suzuki GS 550E (1978-79) vs Yamaha TZR 250SP (1990) vs Suzuki RV 200 VanVan (2017-18) vs Ducati 125 TV Testone (1962-68) vs Suzuki Boulevard M50 (2018-19)

Comparison technical specifications

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Make:	Suzuki	Suzuki	Yamaha	Suzuki	Ducati	Suzuki
Model:	RG 125 Gamma	GS 550E	TZR 250SP	RV 200 VanVan	125 TV Testone	Boulevard M50
Years:	1985	1978-79	1990	2017-18	1962-68	2018-19
Engine:	Two stroke, single cylinder, crankcase reed valve	Four stroke, transverse four cylinders, DOHC, 2 valves per cylinder.	Two stroke, parallel twin cylinders, read valve,	Single cylinder, four stroke, SOHC, 2 valves	Four stroke, single-cylinder, OHC, bevel gear driven	Four stroke, 45° V-Twin, SOHV
Capacity:	124 cc / 7.6 cu-in	549 cc / 33.5 cu in	249 cc / 15.2 cu-in	199 cc / 12.1 cu in	124.4 cc / 7.6 cu in	805cc / 49.1 cu-in
Bore x Stroke:	54 x 54 mm	56 x 55.8 mm	56.4 x 50 mm	66 x 58.2 mm	55.2 x 52 mm	83 x 74.4 mm
Compression Ratio:	7.4:1	8.6:1	5.9:1	9.4:1	7.0:1	9.4:1
Cooling System:	Liquid cooled	Air cooled	Liquid cooled	Air cooled	Air cooled	Liquid cooled
Induction:	28mm Mikuni carburetor	4 x VM22SS Mikuni carburetors	2x Mikuni TM28SS carburetor	Fuel injection	Dell'Orto UB18BS or ME18BS carburetor	Mikuni BDSR34
Ignition:	CDI	Battery and Coil	CDI	Electric	Battery and coil, 6V 40W generator	Electronic
Transmission:	6 Speed	6 Speed	6 speed	5 Speed, constant mesh	4 Speed	5 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain	Shaft
Front Suspension:	30 mm Telescopic forks	Telescopic fork, oil damped	Telescopic fork adjustable preload	Telescopic fork, coil spring, oil damped	Hydraulically damped telescopic forks, Marzocci	Inverted, telescopic, coil spring, oil damped
Rear Suspension:	Single shock linkage	Twin shocks, coil over, 5-way adjustable springload	Coil and gas spring preload 9-way preload position	Swingarm, mono shock, coil spring, oil damped	Swingarm, dual shocks, 3-way adjustable	Link-type, oil damped, 7-way adjustable spring preload
Front Brakes:	Single 230 mm disc	Single 275mm disc, 1 piston caliper	Single 320mm discs 2 piston calipers	Single 220 mm disc, 2 piston calipeer	Drum, 123 mm	Single 300 mm disc, 2 piston caliper
Rear Brakes:	130 mm Drum	Drum	Single 210mm disc 1 piston caliper	Drum	Drum, 123 mm	Drum
Front Tyre:	80/100 S16	3.25-19	100/80-17	130/80 -18M/C 66P, tube type	2.75 - 16	130/90-16M/C 67H, tubeless
Rear Tyre:	90/90 S18	3.75-18	120/80-17	180/80 -14M/C 78P, tube type	2.75 - 16	170/80-15M/C 77H, tubeless