Triumph Street Triple R (2010) vs Kawasaki ZX-R 250 Ninja (1993-94) vs Aprilia RS 660 Stars and Stripes Limited Edition (2022) vs Ducati 1198S Testastretta Evoluzione (2009) vs Harley-Davidson Harley Davidson FXD/I Dyna Super Glide (2001-02) vs Harley-Davidson Harley Davidson FLTRX Road Glide (2019-20)

Comparison technical specifications

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Make:	Triumph	Kawasaki	Aprilia	Ducati	Harley-Davidson	Harley-Davidson
Model:	Street Triple R	ZX-R 250 Ninja	RS 660 Stars and Stripes Limited Edition	1198S Testastretta Evoluzione	Harley Davidson FXD/I Dyna Super Glide	Harley Davidson FLTRX Road Glide
Years:	2010	1993-94	2022	2009	2001-02	2019-20
Engine:	Four stroke, in-line 3-cylinder, DOHC, 12 valves	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder	Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valve 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, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder
Capacity:	675 cc / 41.19 cu-in	249 cc / 15.2 cu-in	659 cc / 40.2 cu-in	1198 cc / 73.1 cu in	1449 cc / 88.4 cu-in	1746 cc / 107 cub in.
Bore x Stroke:	74 x 52.3 mm	49 x 33.1 mm	81 x 63.93 mm	106 x 67.9 mm	95.3 x 101.6 mm	100 x 111 mm
Cooling System:	Liquid-cooled	Liquid cooled	Liquid cooled with radiator and water-oil heat exchanger	Liquid cooled	Air cooled	Air cooled
Compression Ratio:	12.65:1	12.2:1	13.5: 1	12.7:1	8.9:1	10.0:1
Induction:	Multipoint sequential electronic fuel injection with forced air induction	4x Keihin CVK D30 carburetors	Airbox with front air intake. 2 ∅48 mm throttle bodies, Ride-By-Wire management	Marelli electronic fuel injection, elliptical throttle bodies	Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection	Electronic Sequential Port Fuel Injection (ESPFI)
Starting:	Electric	Electric	Electric	Electric	Electric	Electric
Max Torque:	69 Nm / 7.0 kgf-m / 51 ft-lb @ 9100 rpm	2.6 kgf-m / 24.5 Nm @ 11500 rpm	67.0 Nm / 6.83 kgm @ 8,500 rpm	131.4 Nm / 13.4 kgf-m / 97 lb-ft @ 8000 rpm	116.6 Nm / 86 lb-ft @ 3500rpm	154 Nm / 113.6 lb-ft @ 3250 rpm
Clutch:	Wet multiplate	Wet, Multi-disc, Manual, Cable-actuated	Wet, multi-plate, slipper	Dry multiplate with hydraulic control	Wet 9-plate	Hydraulically actuated, 9 plate wet, with high performance spring
Transmission:	6 Speed	6 Speed	6 Speed, AQS Aprilia Quick Shift	6 Speed	5 Speed	6 Speed Cruise Drive®
Final Drive:	O-ring chain	Chain	Chain, with drive ratio: 17/43	Chain, front sprocket 15; rear sprocket 38	Belt	Belt, 32/68 ratio
Frame:	Aluminium beam twin spar	Perimeter, pressed aluminium	Double beam aluminium frame with detachable rear seat	Tubular steel Trellis frame	Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded	Mild steel; tubular frame; two-piece stamped and welded backbone; cast and forged junctions; twin downtubes; bolt-on rear frame with forged fender supports; MIG welded Swingarm Mild steel; two-piece drawn and welded section; forged junctions; MIG welded
Front Suspension:	41mm Kayaba upside down forks, with adjustable preload, rebound and compression damping,	Telescopic forks	Kayaba upside down fork ∅ 41 mm with counter spring, aluminium feet for fixing radial calipers. Adjustable for rebound, compression and spring preload.	Öhlins 43mm with TiN fully adjustable upside-down fork	39 mm w/ polished aluminum fork triple clamp and dual-rate springs	41.3 mm telescopic, triple circuit damping
Rear Suspension:	Kayaba monoshock with piggy back reservoir, adjustable for preload, rebound and compression damping,	Uni-track, Swing arm	Aluminium swingarm with asymmetrical trusses. Monoshock with adjustable counter spring: rebound and spring preload.	Progressive linkage with fully adjustable Öhlins monoshock with top-out spring. Aluminium single-sided swingarm	Coil over shock	Low air-adjustable low profile air ride rear suspension
Front Brakes:	2 x 308mm Floating discs, Nissin4 piston radial calipers	2x discs 2 piston calipers	2x 320mm Brembo radial calipers with 4 32mm opposing pistons. Radial pump and metal braided brake hose	2 x 330 mm Semi-floating discs, radially mounted Brembo Monobloc calipers, 4-piston, 2-pad.	Single 292mm disc 4 piston calipers	2x 300mm discs 4 piston calipers
Rear Brakes:	Single 220 mm disc, 1 piston caliper	Single disc 1 piston caliper	Single 220mm disc; Brembo calliper with 2 isolated ∅ 34mm pistons. Pump with integrated tank and metal braided hos	Single 245 mm disc 2 piston caliper	Single 292mm disc 4 piston calipers	Single 300mm discs 4 piston caliper
Front Tyre:	120/80 ZR17	110/70-R17 54H	120/70 ZR 17 Tubeless radials	120/70 ZR17	100/90-19	130/60B19 61H
Rear Tyre:	180/55 ZR17	140/60-R18 64H	180/55 ZR 17 (alternatively 180/60 ZR17) Tubeless radials	190/55 ZR17	MT90 B16	BW 180/65B16 81H
Rake:	23.9º	24°	24.1°	24°30' / 24.5°	29°	26°
Dimensions:	Length 2030mm / 79.9 in Width (handlebars) 755mm / 29.7 in Height without mirrors 1110mm / 43.7 in	Length 2000 mm / 78.7 in Width 685 mm / 27.0 in Height 1090 mm / 42.9 in	Length mm / in Width mm / in Height mm / in	Length 2100mm / 82.6in Height 1100mm / 43.3in	Length 2357.0 mm / 92.8 in	Length 2423 mm / 95.4 in
Seat Height:	805 mm / 31.7 in	735 mm / 28.9 in	815 mm / 32.0 in	820mm / 32.2in	Laden2 675.6 mm / 26.6 in Unladen 700.0 mm / 27.6 in	Laden 7 658 mm / 25.9 in Unladen 7 695 mm / 27.4 in
Fuel Capacity:	17.4 Litres / 4.6 US gal / 3.8 Imp gal	15 Litres / 3.4 US gal	15 Litres / 3.9 US gal	15.5 Litres / 4.1 US gal / 3.4 Imp gal	18.6 Litres / 4.8 US gal	22.7 Litres / 6.0 US gal