| MODEL | TRIUMPH TRIDENT 660 2021 |
| Year | 2021 |
| Engine Type | Four-stroke, liquid-cooled, transverse three-cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 660 cc / 40.2 cu in |
| Bore X Stroke | 74.0 x 51.1 mm |
| Compression Ratio | 11.95:1 |
| Cooling System | Liquid |
| Max Power | 60 kW / 80 hp @ 10250 rpm |
| Max Torque | 64 Nm / 47 lb-ft @ 6250 rpm |
| Ignition | — |
| Induction | Multipoint sequential electronic fuel injection with electronic throttle control |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed |
| Clutch | Wet, multi-plate, slip and assist |
| Final Drive | X-ring chain |
| CHASSIS SPECS | |
| Frame | Tubular steel perimeter frame, twin-sided, fabricated steel swingarm |
| Front Suspension | Showa 41 mm USD separate function forks, 120 mm / 4.7 in travel |
| Rear Suspension | Showa monoshock RSU, preload adjustable, 134 mm / 5.3 in travel |
| Front Brakes | 2 x 310 mm discs, Nissin 2-piston calipers, ABS |
| Rear Brakes | Single 255 mm disc, Nissin single-piston sliding caliper, ABS |
| DIMENSION SPECS | |
| Overall Length | 2020 mm / 79.5 in |
| Overall Width | 795 mm / 31.3 in (incl. handlebars) |
| Overall Height | 1089 mm / 42.9 in (excl. mirrors) |
| Seat Height | 805 mm / 31.7 in |
| Wheelbase | 1401 mm / 55.2 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 189 kg / 417 lbs |
| WHEEL SPECS | |
| Front Tyre | 120/70 R17 |
| Rear Tyre | 180/55 R17 |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The Trident 660 was Triumph's return to the middleweight roadster class, built around a 660 cc triple derived from the Daytona 675 engine. It is light, narrow and low-seated, with ABS, two riding modes and switchable traction control. An A2 restricted version was available.
