Aprilia SR Motard 50 (2015) vs Aprilia Tuono 1000 R Factory (2008) vs Aprilia RS 125 R osso Fluo (2008) vs Ariel VH 500 Red Hunter (1932-59) vs Aprilia RS4 125 (2019-20) vs Megelli Motard 250M (2015-) vs Aprilia Touno 125 (2017-18) vs Harley-Davidson Harley Davidson FLHTCU Electra Glide Ultra Classic (2007-08)

Comparison technical specifications

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Make:	Aprilia	Aprilia	Aprilia	Ariel	Aprilia	Megelli	Aprilia	Harley-Davidson
Model:	SR Motard 50	Tuono 1000 R Factory	RS 125 R osso Fluo	VH 500 Red Hunter	RS4 125	Motard 250M	Touno 125	Harley Davidson FLHTCU Electra Glide Ultra Classic
Years:	2015	2008	2008	1932-59	2019-20	2015-	2017-18	2007-08
Engine:	Four stroke, single cylinder, 4 valves	Four stroke, longitudinal 60°V twin, DOHC, 4 valves per cylinder	Single cylinder, two stroke, reed valves induction	Four stroke, stroke, single cylinder, OHV, 2-valves	Four stroke, single cylinder, DOHC, 4 valves	Four stroke, single cylinder, SOHC, 4 valve per cylinder	Four stroke, single cylinder, DOHC, 4 valves	Four stroke, 45° V-Twin, Twin Cam 96 vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder
Capacity:	49 cc / 3.0 cu in	997.6 cc / 60.9 cu in	124.8 cc / 7.5 cu in	497 cc / 30.3 cu in	124.8 cc / 7.6 cu in	250 cc / 15.2 cu-in	124.8 cc / 7.6 cu in	1584 cc / 96 cu-in
Bore x Stroke:	39 x 41.35 mm	97 x 67.5mm	54 x 54.5mm	86.4 x 85 mm (after 1936: 81.8 x 95)	58 X 47 mm	77.0 x 53.6 mm	58 X 47 mm	95.2 x 111.2 mm
Cooling System:	Air cooled	Liquid cooled	Liquid cooled	Air cooled	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled
Induction:	Keihin NCV F20 carburetor	Integrated electronic engine management system. Indirect multipoint electronic injection, Ø57 mm throttle bodies.	Dell'Orto PHBH 28 carburetor	Carburetor, large bore down draught Amal	Magneti Marelli M3G Ã¸ 32mm ECU	TK/MV34 carburetor	Magneti Marelli M3G Ã¸ 32mm ECU	Electronic Sequential Port Fuel Injection (ESPFI)
Transmission:	Continuous automatic variator	6 Speed	6 Speed	4-Speed	6 Speed	6 Speed	6 Speed	6 Speed
Final Drive:	V-belt	Chain	17:40	Chain	Chain: 60/13 (4.61)	Chain	Chain: 60/13 (4.61)	Belt
Frame:	High strength steel single cradle	Box section sloping twin-spar frame in aluminium alloy. Removable aluminium alloy saddle mount frame.	Cast aluminium, reinforced box section, sloping twin-spar frame	Semi double cradle	Aluminum perimeter frame	Twin Spar Trellis main frame. T6 Aluminum Trellis with forger dropouts swing arm.	Aluminum perimeter frame	Mild steel, square-section backbone with twin downtubes
Front Suspension:	Telescopic hydraulic fork	Öhlins Racing Ø43 mm upside-down fork with adjustment for spring preload, compression and rebound damping	Upside-down forks, Ø 40mm	Grider front forks	Ø41 mm Upside down fork	Telescopic forks	Ø40 mm Upside-down hydraulic action telescopic fork	41.3 mm telescopic, cartridge-style damping
Rear Suspension:	Engine acts as a swingarm, one hydraulic shock absorber with preload adjustment	Aluminium alloy double member swingarm. APS (Aprilia Progressive System) rising rate linkages. Öhlins Racing piggy-back monoshock with adjustment for spring preload, compression and rebound damping.	Monoshock, cast aluminium box section swingarm with asymmetric members	Rigid, springloaded saddle (after 1954: dual shocks)	Asymmetric swingarm with monoshock	Monoshock, pre-load adjustment	Cast Aluminium swing-arm with asymmetrical members and thin walled structural shell. Hydraulic monoshock with adjustable spring preload	Short, air-adjustable shock
Front Brakes:	Ø220 mm Disc brake with two-piston floating caliper	2 x Ø320mm floating discs, stainless steel, 4 piston calipers, Brembo Gold	Single 320 mm floating discs, 4 piston radial caliper	Drum	Single 300 mm disc, 4 piston caliper	Single disc	Single Ø320 mm disc, 4 piston caliper	2x 292mm disc 4 piston caliper
Rear Brakes:	Ø140 mm Drum brake	Single Ø220 mm stainless steel disc, 2 piston caliper, Brembo Gold	Single 220 mm disc, 2 piston caliper	Drum	Single 218 mm disc, 1 piston caliper	Single disc	Single Ø220 mm disc, 2 piston caliper	Single 292mm disc 4 piston caliper
Fuel Capacity:	7 Litres / 1.9 US gal	18 L / 4.8 US gal	14 Litres / 3.7 US gal	14.8 L / 3.9 US gal	14.5 Litres / 3.8 US gal	6.7 Litres / 1.7 US gal	14 Litres / 3.7 US gal	22 7 Litres / 6.0 US gal