| General |
| Year | 2021 | 2025 |
| Make Model | Triumph Trident 660 | Harley Davidson Sportster S |
| Dimensions |
| Seat Height | 805 mm / 31.7 in | 765 mm / 30.1 in |
| Wheelbase | 1401 mm / 55.2 in | 1520 mm / 59.8 in |
| Ground Clearance | - | 90 mm / 3.5 in |
| Height | 1089 mm / 42.9 in (excl Mirrors) | 1085 mm / 42.7 in |
| Length | 2020 mm / 79.5 in | 2270 mm / 89.42 in |
| Seat Height (Laden) | - | 734 mm / 28.9 in |
| Width | 795 mm / 31.3 in (incl Handlebars) | 840 mm / 33.1 in |
| Weights & Capacities |
| Wet Weight (kg) | 189 | 228 |
| Dry Weight (kg) | - | 221 |
| Dry Weight | - | 221 kg / 487 lbs |
| Fuel Capacity | 14 Litres / 3.7 US gal | 11.7 Litres / 3.1 US gal |
| Wet Weight | 189 kg / 417 lbs | 228 kg / 502 lbs |
| Performance |
| Max Power | 80 hp / 60 kW @ 10250 rpm | 121 hp / 90 kW @ 7500 rpm |
| Max Torque | 64 Nm / 47 lb-ft @ 6250 rpm | 126 Nm / 93 lb-ft @ 6000 rpm |
| Engine |
| Displacement | 660 cc / 40.2 cu-in | 1252 cc / 76.4 cu-in |
| Engine Detail | Four stroke, transverse three cylinder, DOHC, 4 valves per cylinder | Four stroke, 60° V-twin Revolution Max 1250, Chain-driven, DOHC, hydraulic self-adjusting lifters, intake & exhaust VVT, four valves per cylinder |
| Bore x Stroke | 74.0 x 51.1mm | 105 x 72.3 mm |
| Compression Ratio | 11.1:1 | 12.0:1 |
| Cooling System | Liquid cooled | Liquid cooled |
| Emissions | Euro-5 | - |
| Exhaust | Stainless steel 3 into 1 header system with low single sided stainless steel silencer | 2-into-1-into-2, catalyst in muffler |
| Fuel Induction | Multipoint sequential electronic fuel injection with electronic throttle control | Electronic Sequential Port Fuel Injection (ESPFI) |
| Lubrication | - | Semi-dry sump |
| Starter | Electric | Electric |
| Drivetrain |
| Clutch | Wet, multi-plate, slip and assist | Mechanical, 8 plate wet, assist & slip, 1090N |
| Final Drive | X-ring chain | Belt, 34/80 ratio |
| Gear Ratios | - | 1st 12.21 / 2nd 9.022 / 3rd 6.994 / 4th 5.641 / 5th 4.731 / 6th 4.131 |
| Primary Drive | - | Gear, 49/89 ratio |
| Transmission / Drive | 6 Speed | 6 Speed |
| Chassis |
| Frame Type | Tubular steel perimeter frame, twin-sided, fabricated steel Swingarm | Stressed-member, high strength low alloy steel trellis frame; stamped, cast, and forged junctions; MIG welded; aluminum forged mid-structure |
| Suspension - Front | 41mm Showa upside down separate function forks (SFF) | 43 mm inverted fork with compression, rebound and spring preload adjustability. Aluminium fork triple clamps |
| Suspension - Rear | Showa monoshock RSU, with preload adjustment | Linkage-mounted, piggyback monoshock with compression, rebound and hydraulic spring preload adjustability |
| Fork Angle | - | 28° |
| Lean Angle | - | 35° |
| Rake | 24.6° | 30° |
| Swingarm | - | High strength low alloy steel, tubular sections, stamped x-member, forged axle junctions; MIG welded |
| Trail | 107.3 mm / 4.2 in | 148 mm / 5.8 in |
| Wheel Travel - Front | 120 mm / 4.7 in | 92 mm / 3.6 in |
| Wheel Travel - Rear | 134 mm / 5.3 in | 82 mm / 3.2 in |
| Electrical Systems |
| Instrumentation | Multi-function instruments with colour TFT screen | - |
| Wheels & Brakes |
| Brakes - Front | 2x 310mm discs Nissin 2-piston calipers | Single 320mm rotor, radially mounted, monoblock, 4-piston caliper |
| Brakes - Rear | Single 255mm disc Nissin single-piston sliding caliper | Single 260mm solid uniform expansion rotor, floating single piston caliper |
| ABS | Standard | Standard |
| Rims - Front | 3.5 x 17 | 4.5 x 17 |
| Rims - Rear | 5.5 x 17 | 5.0 x 16 |
| Tyres - Front | 120/70 - R17 | 160/70TR17 73V Dunlop- Harley-Davidson Series, radial, GT503 |
| Tyres - Rear | 180/55 - R17 | 180/70R16 77V Dunlop- Harley-Davidson Series, radial, GT503 |
| Wheels | 5 Spoke cast aluminum | Aluminum cast, satin black |