Moto Guzzi MGX-21 Flying Fortress (2016-17) vs Harley-Davidson Harley Davidson FLSTF/I Fat Boy (2003-04) vs BMW R 1200RT LC (2017) vs MV Agusta 125 Turismo GT (1970-73) vs Harley-Davidson Harley Davidson FXDL Dyna Low Rider (2007-09)

Comparison technical specifications

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Make:	Moto Guzzi	Harley-Davidson	BMW	MV Agusta	Harley-Davidson
Model:	MGX-21 Flying Fortress	Harley Davidson FLSTF/I Fat Boy	R 1200RT LC	125 Turismo GT	Harley Davidson FXDL Dyna Low Rider
Years:	2016-17	2003-04	2017	1970-73	2007-09
Engine:	Four stroke, 90° V-twin, SOHC, 4 valves per cylinder	Four stroke, 45° V-Twin, Twin Cam 88® vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder	Four stroke, two cylinder horizontally opposed Boxer, DOHC, 4 valves per cylinder	Four stroke, single cylinder, pushrod, 2 valve	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:	1380 cc / 84.2 cu-in	1449 cc / 88.4 cu-in	1170, 71.4 co in	123.5 cc / 7.5 cu-in	1584 cc / 96 cu-in
Bore x Stroke:	104 x 81.2 mm	95.3 x 101.6 mm	101 x 73 mm	53 x 56 mm	95.3 x 111.1 mm
Cooling System:	Air/ oil cooled	Air cooled	Liquid cooled	Air cooled	Air cooled
Compression Ratio:	10.5:1	8.9:1	12.5:1	10.0:1	9.2:1
Ignition:	Phased electronic Multipoint sequential injection	Single-fire, non-wasted, map-controlled spark ignition	Digital engine management	Fywheel - magneto	Single-fire, non-wasted, map-controlled spark ignition
Starting:	Electric	Electric	Electric	Kick	Electric
Clutch:	Single-disc with integrated anti-vibration buffer	Wet 9-plate	Single disc dry clutch, hydraulically actuated	Wet multiple plate clutch	Multi-plate, wet
Transmission:	6 speeds with final overdrive	5 Speed	6 Speed	5 Speed	6 Speed
Final Drive:	Shaft	Belt	Shaft	Chain	Belt
Frame:	Double cradle tubular frame in ALS steel with detachable rear subframe	Mild steel tubular frame; rectangular section backbone; stamped, cast and forged junctions; forged fender supports; MIG welded Swingarm Mild steel, rectangular tube sections, stamped junctions, MIG welded	Tubular steel frame, engine load-bearing	Open double cradle tubular and pressed steel	Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded
Front Suspension:	Standard swingarm, Ø 46 mm, with radial calliper mounting bracket and telescopes on the stanchions,	41.3 mm Telescopic forks with ”beer can” covers	BMW Telelever	Telescopic hydraulic fork	49 mm with polished aluminum fork triple clamp and dual-rate springs
Rear Suspension:	Swingarm with double shock absorber with adjustable spring preload.	Hidden, horizontal-mounted, coil-over shock	BMW EVO Paralever	Swingarm with hydraulic shocks	Coil over shock
Front Brakes:	2x 320 mm stainless steel floating discs, Brembo radial callipers with 4 horizontally opposed pistons	Single 292mm disc 4 piston caliper	2 x 320mm Discs, 4 piston callipers	158mm Drum	Single 300 mm disc, 4 piston fixed caliper
Rear Brakes:	Single 282 mm stainless steel fixed disc, Brembo floating calliper with 2 parallel pistons	Single 292mm disc 4 piston caliper	Single 276mm disc, 2 piston caliper	123mm Drum	Single 292 mm disc, 2 piston torque free floatingcaliper
Front Tyre:	130/70 R18	D402F MT90B16 72H	120/70 ZR17	2 75- 18	D401F 100/90-19 57H
Rear Tyre:	200/60 R16	D401 150/80B16 71H	180/60 ZR17	2 75- 18	D401 150/80B16 71H
Dimensions:	Length 2445 mm / 90.2 in Width 940 mm / 37.0 in Height 1115 mm / 43.8 in	Length 2395.2 mm / 94.3 in	Length 2222 mm / 87.5 in Width 983 mm / 38.7 in Height 1417 mm / 55.7 in	Length 1920 mm / 75.5 in Width 640 mm / 25.1 in	Length 2364.74 mm / 93.1 in width 922.02 mm / 36.3 in Height 1193.80 mm / 47 in
Wheelbase:	1695 mm / 66.7 in	1638 mm / 64.5 in	1485 mm / 58.5 in	1280 mm / 50.3 in	1640 mm / 64.6 in.
Fuel Capacity:	20.5 Litres / 5.4 US gal	18.9 Litres / 5.0 US gal	25 Liters / US 6.6 gal	15 Litres / 3.9 US gal	17.8 Litres / 4.8 US gal