Trident 660 Specifications

The Triumph Trident 660 is powered by a 660cc liquid-cooled inline-three cylinder engine - the same basic architecture that underpins the Street Triple and Tiger Sport 660, tuned here for accessible everyday performance rather than outright aggression. It produces 80 bhp at 10,250 rpm and 64 Nm of peak torque at 6,250 rpm, figures that put it ahead of the Kawasaki Z650's parallel-twin while keeping the power delivery manageable for newer riders.

The engine is paired with a six-speed gearbox and an assist and slipper clutch, with a bi-directional quickshifter now standard on the 2025 model - a feature that transforms everyday riding by allowing clutchless upshifts and downshifts at speed. Three riding modes - Road, Rain, and Sport - adjust throttle response and traction control sensitivity. Sport mode, newly added for 2025, sharpens the throttle response noticeably and is best kept for open roads or track days.

On the chassis side, the Trident 660 uses 41mm Showa SFF (Separate Function Front Fork) upside-down units - upgraded to Showa Big Piston specification on the 2025 model - which offer better damping feedback than the conventional forks on the Kawasaki Z650. The rear is handled by a Showa monoshock with preload adjustment. Ground clearance is 150 mm, which is adequate for most city riding but worth watching on particularly scarred roads.

Braking is via 310mm dual front discs with four-piston calipers and a 255mm single rear disc, controlled by dual-channel cornering ABS. The factory-fit Michelin Road 5 tyres on 17-inch alloy wheels are genuinely high-quality rubber - most owners keep them through the first set without feeling the need to upgrade. Kerb weight stands at 189 kg and the 805 mm seat height means most riders of 5'5" and above can manage the bike confidently. Fuel tank capacity is 14 litres, giving a theoretical range of around 210 km at ARAI's rated 15 kmpl - real-world riders report 17-20 kmpl in mixed conditions.