Sunbeam Model 10 (1931) vs Derbi Senda SM 125 4T Baja (2006) vs KTM 990 Duke R (2025) vs KTM 300 EXC Hardenduro (2025) vs KTM 390 SMC R (2025) vs Sunbeam Model 4 de Luxe (1924-26)

Comparison technical specifications

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Make:	Sunbeam	Derbi	KTM	KTM	KTM	Sunbeam
Model:	Model 10	Senda SM 125 4T Baja	990 Duke R	300 EXC Hardenduro	390 SMC R	Model 4 de Luxe
Years:	1931	2006	2025	2025	2025	1924-26
Engine:	Single cylinder, OHV	Four stroke, single cylinder. OHC	Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder	Two stroke, Two stroke, single cylinder, with reed intake and exhaust control	Four stroke, single cylinder, DOHC with finger followers, 4 valves	Single cylinder, side valve
Capacity:	344 cc / 21.0 cu in	124 cc / 7.6 cu-in	947 cc / 57.8 cu-in	293.2 cc / 17.9 cu-in	398.7 cc / 24.3 cu-in	596 cc / 36.4 cu in
Bore x Stroke:	74 80 mm	56 x 49 mm	92.5 x 70.4	72 x 72 mm	89 x 64 mm	85 x 105.5 mm
Cooling System:	Air cooled	Air cooled	Liquid cooled with water/oil heat exchanger	Liquid cooled	Liquid Cooled	Air cooled
Starting:	Kick	Electric	Electric	Electric	Electric	Kick
Transmission:	3-Speed	5 Speed	6-Speed	6 Speed	6 Speed	3-Speed
Final Drive:	Chain	Chain	Chain 520 X-ring, 16/43	X-Ring 520	Chain 520-X Ring	Chain
Front Suspension:	Druid forks	41mm Paoli forks	WP APEX, Compression High Speed (3 turns) Low Speed (30 Clicks), Rebound (30 Clicks), Preload (10 turns)	48 mm WP XACT-USD	43mm WP APEX 43, open cartridge, compression and rebound adjustable	Druid forks
Rear Suspension:	Rigid, spring loaded saddle	Paoli monoshock	WP APEX - Monoshock	WP XPLOR Monoshock with PDS, Aluminium-reinforced polyamide	WP APEX - Monoshock, split piston, rebound and preload adjustable	Rigid, spring loaded saddle
Front Brakes:	Drum, internal expanding	Single 300mm disc	2x 300mm discs, radially mounted BREMBO STYLEMA 4 piston caliper	Single 260 mm disc, 2 piston caliper	Single 320 mm disc, Bybre 2 piston radial caliper	Drum
Rear Brakes:	Drum, internal expanding	Single 220mm disc	Single 240 mm disc, single piston BREMBO caliper	Single 220 mm disc, 1 piston caliper	Single 240 mm disc, Bybre 1 piston floating caliper	Drum