Norton Commando 850 Roadster MKII (1975) vs Royal Enfield Bear 650 (2025) vs Ducati Panigale V4 SP2 (2022) vs Megelli Naked 125 (2011-) vs Triumph Bandit 350SS (T35SS) (1971) vs Ducati Diavel V4 (2023) vs KTM 350 EXC-F (2022)

Comparison technical specifications

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Make:	Norton	Royal Enfield	Ducati	Megelli	Triumph	Ducati	KTM
Model:	Commando 850 Roadster MKII	Bear 650	Panigale V4 SP2	Naked 125	Bandit 350SS (T35SS)	Diavel V4	350 EXC-F
Years:	1975	2025	2022	2011-	1971	2023	2022
Engine:	Four stroke, parallel twin cylinder, push rod 2 valves per cylinder.	Four stroke, Parallel Twin, SOHC	Four stroke, Desmosedici Stradale 90° V4, rearward-rotating crankshaft, 4 Desmodromically actuated valves per cylinder	Four stroke, single cylinder, SOHC	Four stroke, parallel twin, DOHC, 2 valvews per cylinder, alloy	Four stroke, 90° Granturismo V4, counter rotating crankshaft, 4 valves per cylinder, Twin Pulse firing order	Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder
Capacity:	829 cc / 50.6 cu in	648 cc / 39.5 cu-in	1103 cc / 67.3 cu-in	124 cc / 7.6 cu-in	349 cc / 21.3 cu in	1158 cc / 71 cu-in	349.7 cc / 21.3 cu-in
Bore x Stroke:	77 x 89 mm	78 x 67.8 mm	81 x 53.5 mm	56.5 x 49.5 mm	63 x 56 mm	83 x 53.5 mm	88 x 57.5 mm
Compression Ratio:	8.5:1	9.5:1	14.0:1	10.0:1	9.5:1	14.0:1	12.3:1
Cooling System:	Air cooled	Air/oil-cooled	Liquid cooled	Air cooled	Air cooled	Liquid cooled	Liquid cooled
Induction:	2 x Ø32 mm Amal concentric carburetors	Electronic Fuel Injection	Electronic fuel injection system. Twin injectors per cylinder. Full ride-by-wire elliptical throttle bodies. Variable length intake system	Mikuni carburetor	2 x 27 mm Amal carburetors	Electronic fuel injection system, Øeq 46 mm elliptical throttle bodies with Ride-by-Wire system	Keihin EFI, flow restrictor 42 mm
Starting:	Electric and kick	Electric	Electric	Electric	Kick (electric starter option)	Electric	Electric
Clutch:	Metal diaphragm clutch	Wet, multi-plate	Hydraulically controlled slipper dry clutch. Self bleeding master cylinder	Wet, multiplate	Wet, multi-plate	Hydraulically controlled slipper and self-servo wet multiplate clutch	Wet, DDS multi-disc clutch, Brembo hydraulics
Transmission:	4 Speed	6 Speed, constant mesh	6 speed with Ducati Quick Shift (DQS) up/down EVO 2	5 Speed	5-Speed	6-speed gearbox with Ducati Quick Shift (DQS) Up & Down System	6 Speed
Final Drive:	Chain	Chain	Chain 525; Front sprocket 16; Rear sprocket 41	Chain	Chain	Chain, front sprocket z16, rear sprocket z43	Chain, X-Ring 5/8 x 1/4
Frame:	Twin downtube cradle with Isolastic engine mounts	Steel tubular double cradle frame	Aluminum alloy "Front Frame" with optimized stiffnesses	A12 Multi Twin Spar Trellis Configuration frame. T6 Aluminum Trellis with forger dropouts swing arm.	Tubular steel, double cradle	Aluminum monocoque frame	Central double-cradle-type 25CrMo4 steel
Front Suspension:	Telescopic forks	43mm USD telescopic fork	Öhlins NPX25/30 pressurized 43 mm fully adjustable fork with TiN treatment. Electronic compression and rebound damping adjustment with Öhlins Smart EC 2.0 event-based mode	Telescopic forks	Telescopic fork	50 mm fully adjustable USD fork	48mm WP XPLOR-USD forks
Rear Suspension:	Swing arm with Girling coil springs	Twin Shocks, preload adjustable	Fully adjustable Öhlins TTX36 unit. Electronic compression and rebound damping adjustment with Öhlins Smart EC 2.0 event-based mode. Aluminum single-sided swingarm	Monoshock, pre-load adjustment	Twin shocks, coil springs	Fully adjustable monoshock, aluminum single-sided swingarm	WP Xplor PDS shock absorber
Front Brakes:	Single disc	Single 320mm disc	2 x 330 mm semi-floating discs, radially mounted Brembo Monobloc Stylema® R 4-piston calipers. Self bleeding Brembo MCS 19.21 master cylinder	Single disc	Drum, internal expanding	2 x 330 mm semi-floating discs, radially mounted Brembo Stylema monoblock 4-piston calipers, radial master cylinder PR16/19	Single 260 mm disc, 2 piston caliper
Rear Brakes:	Single disc	Single 270mm disc	245 mm disc, 2-piston caliper	Single disc	Drum, internal expanding	Single 265 mm disc, Brembo 2-piston floating caliper	Single 220 mm disc, 1 piston caliper
Front Tyre:	4.10-19	100/90 - 19 M/C 57H	120/70 ZR17 Pirelli Diablo Supercorsa SP	100/70-17	3.25 x 18 Dunlop K70	120/70 ZR17 Pirelli Diablo Rosso III	90/90 - 21 M/C 54M M+S TT
Rear Tyre:	4.10-19	140/80 - R17 M/C 69H	200/60 ZR17 Pirelli Diablo Supercorsa SP	130/70-17	3.50 x 18 Dunlop K70	240/45 ZR17 Pirelli Diablo Rosso III	140/80 - 18 M/C 70M M+S TT
Fuel Capacity:	19 Litres / 5.0 US gal	13.6 Litres / 3.6 US gal	17 Litres / 4.49 US gal		13.5 L / 3.6 US gal / 3.0 Imp gal	20 Litres / 5.3 US gal	9 Litres / 2.3 US gal