Aprilia AF1 125 Futura (1991-) vs Aprilia Pegaso 650 (1999-00) vs Aprilia ETX 125 (1997-98) vs Aprilia TX 312M (1989) vs Aprilia Pegaso 650 (1994-96) vs Aprilia 125 Pegaso (1989-90) vs Aprilia 125 Red Rose (1989-) vs Aprilia 125 Pegaso (1991-92) vs Aprilia AF1 125 Sintesi (1989) vs Aprilia ETX 350 (1989-90) vs Harley-Davidson X 440 (2024)

Comparison technical specifications

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Make:	Aprilia	Aprilia	Aprilia	Aprilia	Aprilia	Aprilia	Aprilia	Aprilia	Aprilia	Aprilia	Harley-Davidson
Model:	AF1 125 Futura	Pegaso 650	ETX 125	TX 312M	Pegaso 650	125 Pegaso	125 Red Rose	125 Pegaso	AF1 125 Sintesi	ETX 350	X 440
Years:	1991-	1999-00	1997-98	1989	1994-96	1989-90	1989-	1991-92	1989	1989-90	2024
Engine:	Two stroke, single cylinder light alloy and barrel with GILNISIL surface coating	Four stroke, single-cylinder, DOHC, 5 valves	Two stroke single cylinder with laminar suction and separate lubrication	Single cylinder, two stroke	Four stroke, single-cylinder, DOHC, 5 valves	Two stroke, single cylinder, reed valves	Single cylinder, two-stroke	Two stroke, single cylinder, reed valves	Two stroke, single cylinder, light alloy, barrel with Gilnisil coating	Four stroke, single cylinder, 4 valves, OHC	Four stroke, single cylinder
Capacity:	124.7 cc / 7.6 cu in	652 cc / 39.8 cu in	124.8 cc / 7.6 cu in	277cc / 16.9 cu in	652 cc / 39.8 cu in	124 cc / 7.6 cu in	124.7 cc / 7.5 cu in	124 cc / 7.6 cu in	124.7 cc / 7.6 cu in	349.2 cc / 21.3 cu in	440 cc / 26.8 cu-in
Bore x Stroke:	54 x 54.5 mm	100 x 83 mm	54 x 54.5 mm	76 x 61 mm	100 x 83 mm	54 x 54.5mm	54 x 54.5 mm	54 x 54.5mm	54 x 54.5 mm	79.5 x 70.4 mm	79.6 X 88.4 MM
Compression Ratio:	13.6:1	9.1:1	15.5:1	8.5:1	9.0:1	14.0:1	15 :1	14.0:1	15.1:1	9.6:1	9.5;1
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled	Air/Oil cooled
Starting:	Electric	Electric	Kick	Kick	Electric	Electric	Electric	Electric	Electric	Electric	Electric
Transmission:	6 Speed	5 Speed	6 Speed	6 Speed	5 Speed	6 Speed	6 Speed	6 Speed	6 Speed	5 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain
Front Suspension:	Upside down fork, Ø 38 mm	Ø45 mm Upside down forks preload adjustable, Marzocci	Hydraulically operated telescopic fork	Telescopic fork	Ø40 mm Upside down forks preload adjustable	Ø41 mm Inverted telescopic forks	Telescopic fork	Ø41 mm Inverted telescopic forks	Telescopic fork, Ø 38 mm	Hydraulic telescopic front fork	43 mm KYB USD cartridge forks
Rear Suspension:	Aprilia Progressive System with hydraulic single shock-absorber, 1120mm wheel travel	Varying section high strength steel swing-arm, Aprilia Progressive System (APS) rising rate linkage	Hydraulic adjustable mono-shock	Monoshock	Monoshock preload and rebound adjustable	Single chock preload adjustable	Dual Hydraulic shock absorbers	Single chock preload adjustable	Aprilia progressive mono shock system, Sebach	Swingarm with single shock absorber.	Dual gas-filled shocks with seven steps of pre-load adjustment.
Front Brakes:	Single Ø 320 mm disc, 4 piston caliper	Single Ø300 mm disc, 2 piston caliper	Single disc, Ø250 mm	ingle disc	Single Ø300 mm disc, 2 piston caliper	Single Ø300 mm disc, 2 piston caliper	Single 260 mm disc	Single Ø300 mm disc, 2 piston caliper	Single Ø 320 mm floating disc, 4 piston caliper, Brembo	Single disc	Single 320 mm disc
Rear Brakes:	Single Ø 240 mm disc, 2 piston caliper	Single Ø220 mm disc, 1 piston caliper	Single disc, Ø220 mm	Expanding drum	Single Ø220 mm disc, 1 piston caliper	Single Ø220 mm disc, 1 piston caliper	Single 240 mm disc	Single Ø220 mm disc, 1 piston caliper	Single Ø 240mm disc, 2 piston caliper	Single disc	Single 240 mm disc
Front Tyre:	100/80 -17	100/90-19	90/90 - 21 54R or 54S or 80/100 - 21 51R	2.75-21	100/90-19	100/90-18	90/90-19	100/90-18	100/80-17	90/90-21	100/90 X 18
Rear Tyre:	140/70 -17	130/80-17	120/80 - 18 62S or 120/90 - 18 65R or 65P	4.00-18	140/70-17	120/80-17	130/90-16	120/80-17	130/70-17	130/80-17	140/70 X 17
Fuel Capacity:	14.5 Litres / 3.8 US gal	21 Litres / 5.5 US gal	11 Litres / 2.9 US gal	4.5 L / 1.2 US gal	22 Litres / 5.8 US gal	14 Litres / 3.7 US gal	10 Litres / 2.6 US gal	14 Litres / 3.7 US gal	20 L / 5.3 US gal	13 Litres / 3.4 US gal	13.5 Litres / 3.5 US gal