Velocette GTP (1930-46) vs Triumph Street Triple 675 (2008) vs Laverda Jota 1000 (1978-80) vs Triumph 6T Thunderbird (1954-62) vs Yamaha XMAX 125 (2012-13) vs Yamaha XS 400R Seca (1982-) vs Ducati Streetfighter (2011) vs Triumph Street Triple 765S (2019)

Comparison technical specifications

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Make:	Velocette	Triumph	Laverda	Triumph	Yamaha	Yamaha	Ducati	Triumph
Model:	GTP	Street Triple 675	Jota 1000	6T Thunderbird	XMAX 125	XS 400R Seca	Streetfighter	Street Triple 765S
Years:	1930-46	2008	1978-80	1954-62	2012-13	1982-	2011	2019
Engine:	Two-stroke, Single cylinder	Four stroke, in-line 3-cylinder, DOHC, 12 valve	Four stroke, transverse three cylinder, DOHC, 2 valve per cylinder.	Four stroke, vertical twin, OHV	Four stroke, single cylinder	Four stroke, parallel twin, DOHC, 2 valves per cylinder	Four stroke, 90° “L” twin cylinder, DOHC, desmodromic 4 valves per cylinder	Four stroke, in-line 3-cylinder, DOHC, 4 valve per cylinder
Capacity:	249 cc / 15.2 cub in	675 cc / 41.19 cu-in	980 cc / 59.8 cu-in	649 cc / 40.0 cu in	124 cc / 7.6 cu-in	399 cc / 24.3 cu-in	1099 cc / 67.1 cu in	765 cc / 46.6 cu-in
Bore x Stroke:	63 x 80 mm	74 x 52.3 mm	75 x 74 mm	71 x 82 mm	52 x 58.6 mm	69.0 x 53.4 mm	104 x 64.7 mm	78 x 53.4 mm
Compression Ratio:	6.5:1	12.65:1	10.0:1	8.5:1 (Export), 7.0:1 (UK)	11.2:1	9.7:1	12.4:1	12.65:1
Cooling System:	Air cooled	Liquid-cooled	Air cooled	Air cooled	Liquid cooled	Air cooled	Liquid cooled	Liquid-cooled
Ignition:	Coil in conjunction with Miller	Digital - inductive type	Bosch electronic	Lucas RM14	Electronic ECU	Transistorized	Digital CDI	Digital - inductive type
Starting:	Kick start	Electric	Electric	Kick	Electric	Electric	Electric	Electric
Transmission:	Early models: 3 Speed, hand operated Later models: 4 Speed, foot operated	6 Speed	5 Speed	4-Speed constant mesh	Automatic	6 Speed	6 Speed	6 Speed, close ratio
Final Drive:	Chain	O ring chain	Chain	Chain, 101 links	Belt	Chain	Chain	O ring chain
Front Suspension:	Webb fork with shock absorber and steering damper	41mm Kayaba telescopic upside down forks	Coils springs	Telescopic fork, hydraulic damping	Hydraulic telescopic fork	Hydraulic telescopic forks	Showa 43mm fully adjustable upside-down fork	Showa 41 mm upside down separate function forks (SFF)
Rear Suspension:	None, spring loaded seat	Kayaba monoshock, adjustable preload	Dual shock absorbers, 5-way adjustable coil springs	Swingarm, 2 Griling dampers	Hydraulic unit swing	Monocross system with single coil sprung, gas/oil damped shock, pre-load adjustable	Progressive linkage with fully adjustable Showa monoshock. Aluminium single-sided swingarm	Showa piggyback reservoir monoshock, stepped preload adjuster
Front Brakes:	6 in. drum, internal expanding	2 x 308 mm Discs, Nissin 2 piston sliding calipers	2x 280mm discs 2 piston calipers	SLS drum, 8 in	Single 267mm disc	2x discs	2x 330 mm Semi-floating discs, radially mounted Brembo Monobloc calipers 4-piston, 2-pad.	2 x 310 mm floating discs, Nissin 2-piston sliding calipers
Rear Brakes:	6 in. drum, internal expanding	Single 220 mm disc, 1 piston caliper	Single 280mm disc 1 piston caliper	SLS drum, 7 in	Single 240mm disc	Drum	Single 245 mm disc, 2 piston caliper	Single 220 mm fixed disc, Brembo single piston sliding calliper
Fuel Capacity:	6.6 L / 1.75 US gal	17.4 Litres / 4.6 US gal / 3.8 Imp gal	20.5 Litres / 5.4 US gal	13.6 L / 3.6 US gal / 3.0 Imp gal (US), 18 L / 4.8 US gal / 4.0 Imp gal (UK and export)	12.5 Litres / 3.3 gal	18 Litres / 4.7 US gal	16.5 Litres / 4.4 US gal / 3.6 Imp gal	17.4 Litres / 4.6 US gal / 3.8 Imp gal
Dry Weight:	101 kg / 222 lbs (light set included)	167 kg / 368 lbs	238 kg / 524.7 lbs	179 kg / 395 lbs	153 kg / 337.3 lbs	169 kg / 372.9 lbs	169 kg / 373 lbs	165.5 kg / 365 lbs