Ducati 750 F1 Montjuich (1986) vs Yamaha FZR 250R (1993-95) vs Yamaha XT 250 Serow (2010-11) vs Yamaha XS 400 Special (1980-81) vs Yamaha TDM 850 (1993-95) vs Yamaha FZ6R (2010)

Comparison technical specifications

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Make:	Ducati	Yamaha	Yamaha	Yamaha	Yamaha	Yamaha
Model:	750 F1 Montjuich	FZR 250R	XT 250 Serow	XS 400 Special	TDM 850	FZ6R
Years:	1986	1993-95	2010-11	1980-81	1993-95	2010
Engine:	Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valves per cylinder, belt driven	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, single cylinder. SOHC, 2 valve	Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder	Four stroke, parallel twin cylinder, DOHC, 5 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity:	748 cc / 45.6 cu in	249 cc / 15.2 cu-in	249 cc / 15.2 cu-in	392 cc / 23.9 cu-in	849 cc / 51.8 cu-in	599 cc / 36.5 cu-in
Bore x Stroke:	88 x 61.5 mm	48 х 34.5 mm	74.0 x 58.0mm	69.0 x 52.4 mm	89.5 x 67.5 mm	65.5 x 44.5 mm
Compression Ratio:	10.0:1	12.0:1	9.5;1	9.2:1	9.2:1	12.2:1
Induction:	2 x 36 mm Dell'Orto PH 40N carburetors	MIKUNI BDS2600 carburetor	Teikei 33mm carburetor	2x Mikuni BS32 carburetors	2x Mikuni BDST88 carburetors	Group injection type fuel injection
Ignition:	Kokusan electronic	CDI	CDI	Battery ignition - With contact breaker points	Digital	Digital TCI
Starting:	Electric	Electric	Electric	Electric & kick	Electric	Electric
Max Power:	69.9 kW / 95 hp @ 10000 rpm	45 hp / 32.8 kW @ 14500 rpm	18 hp / 13.1 kW @ 7500 rpm	36 hp / 26.8 kW @ 8100 rpm	77 hp / 56.1 kW @ 7500 rpm	77.5 hp / 57 kW @ 11500 rpm
Max Torque:	70.6 Nm / 7.2 kgf-m / 52.1 ft-lb @ 7000 rpm	25 Nm / 2 kgf-m @ 11500 rpm	19 Nm / 14.0 lb-fts @ 6500 rpm	3.3 kgf-m / 23.8 lb-ft @ 8000 rpm	75.5 Nm / 55.6 lb-ft @ 6000 rpm	51.6 Nm / 6.1 kg-m / 44.1 ft-lb @ 8500 rpm
Transmission:	5 Speed	6 Speed	5 Speed	6 Speed	5 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain	Chain
Front Suspension:	40 mm Forcella Italia fork	38mm Telescopic forks	35mm Telescopic forks	Telescopic fork	41mm Telehydraulic forks, adjustable for preload and rebound	43mm Telescopic fork,
Rear Suspension:	Round section chrome-moly steel swingarm with adjustable (for preload) cantilever mono-shock, Marzocchi PVS 4	Monoshock preload adjustable.	Monocross, Swingarm rebound-adjustable single shock	Dual shocks swing arm, preload adjustable	Monocross single DeCarbon type gas-oil shock adjustable for preload and rebound	Swingarm Link less type Monocross,
Front Brakes:	2 x 280mm Discs, 4 piston calipers Brembo P3432D "Gold Series"	2x 285mm discs 4 piston calipers	Single 245mm disc	Single disc	2x 298mm discs 4 piston calipers	2x 298 mm discs
Rear Brakes:	Single 260 mm disc	Single 210mm disc 2 piston caliper	Single 203mm disc	Drum	Single 245mm disc 2 piston caliper	Single 245 mm disc
Front Tyre:	120/60 V16	100/80--17	80/70-21	3.00-18	110/80-18	120/70 ZR17
Rear Tyre:	130/80 V16	130/70-17	120/80-18	3.50-18	150/70-17	160/60 ZR17
Fuel Capacity:	18 L / 4.8 US gal / 4.0 Imp gal	14 Litres / 3.7 US gal	9.8 Litres / 2.6 US gal	14 Litres / 3.7 US gal	18 Litres / 4.7 US gal	17.3 Litres / 4.6 gal