Triumph Trident 660 Review (2026): 81 PS Triple Engine, Standard Shift Assist & Dyno Test
The 2026 Triumph Trident 660 receives an extensive equipment and technology overhaul, cementing its status as the most sophisticated middleweight roadster in its class. Power comes from the character-laden 660cc liquid-cooled inline 3-cylinder engine, producing 81 PS (80 HP) at 10,250 RPM and 64 Nm (47.2 lb-ft) of torque at 6,250 RPM, with over 90% of torque accessible from 3,600 to 9,750 RPM. For 2026, Triumph makes premium technology standard equipment, including a bi-directional Triumph Shift Assist quickshifter, 6-axis IMU-governed Optimised Cornering ABS and Traction Control, electronic cruise control, and a third 'Sport' throttle map. Combined with upgraded Showa 41mm SFF-BP inverted forks and Bluetooth smartphone integration on its multi-function TFT dash, the 2026 Trident 660 starts at an MSRP of $8,595 USD.
The Strengths
- Smooth 660cc triple cylinder engine provides the low-end grunt of a twin with the top-end revving thrill of a four
- Triumph Shift Assist bi-directional quickshifter is now standard factory equipment, delivering crisp clutchless shifts
- 6-axis IMU brings sophisticated Optimised Cornering ABS and Cornering Traction Control to the middleweight category
- Electronic cruise control is now standard, significantly reducing wrist fatigue on long highway connector runs
- Upgraded Showa 41mm SFF-BP inverted forks provide enhanced high-frequency bump compliance and cornering support
- Low 805mm seat height and narrow stand-over profile inspire immediate confidence for riders of all statures
The Compromises
- Compact underbelly exhaust can transmit noticeable radiant heat to the rider's right heel in standstill traffic
- Wind protection is minimal at speeds exceeding 75 mph unless equipped with an accessory flyscreen
- Rear pillion passenger space is cozy, intended primarily for urban hops rather than extended touring
660cc Triple-Cylinder Engine & Shift Assist Transmission
Liquid-cooled 12-valve triple with linear torque spread and standard bi-directional quickshifter.
Real-World Performance & Dyno Telemetry
Instrumented road tests, 0-60 acceleration, quarter-mile sprint, and braking deceleration.
Showa SFF-BP Inverted Forks & Nissin Braking Setup
41mm big piston separate function fork, preload monoshock, and cornering ABS.
Chassis Specifications
- FRONT SUSPENSION: 41mm Showa USD SFF-BP (Separate Function Big Piston Fork (120mm Travel))
- REAR SUSPENSION: Showa Monoshock RSU (Preload Adjustable Damper (130mm Travel))
- FRONT BRAKES: Dual 310mm Floating Discs (Nissin 2-Piston Sliding Calipers with Cornering ABS)
- REAR BRAKE: Single 255mm Disc (Nissin Single-Piston Caliper with Cornering ABS)
6-Axis IMU Rider Aids, Cruise Control & Connectivity
TFT instrument cluster, cornering traction control, ride modes, and connectivity.
Cockpit & Tech Features
- 6-axis IMU calculates real-time lean angles to control Optimised Cornering ABS and Traction Control
- Three distinct throttle riding modes: Road (balanced response), Rain (gentle delivery), and new Sport (sharp throttle map)
- Factory electronic cruise control operated effortlessly via left switchgear buttons for relaxed motorway transit
- My Triumph Bluetooth connectivity module integrated as standard for turn-by-turn navigation and phone integration
- Hybrid TFT and white-on-black LCD dashboard layout presents essential speed, gear, and trip stats with crystal clarity
- All-LED round 7-inch headlight with Triumph badge logo insert, self-cancelling indicators, and integrated LED taillight
Complete 30-Point Technical Specification Matrix
Factory engineering metrics, valve clearances, and chassis dimensions for the 2026 Triumph Trident 660.
1. 660cc Inline-Triple Powertrain & Gearing
Engine Architecture
Power, Torque & Transmission
2. Chassis, Showa Suspension & Nissin Braking Hardware
Chassis & Geometry
Suspension & Brakes
3. Dimensions, Ergonomics & Electrical Capacities
Dimensions & Capacities
Electronics & Service Schedule
The Most Sophisticated and Well-Equipped Middleweight Naked
Buy If You Want
- You desire the musical exhaust note and flexible power delivery of an authentic British 3-cylinder engine
- You want premium equipment like standard quickshifter, cornering IMU electronics, and cruise control without paying extra
- You appreciate an approachable 805mm seat height paired with agile, confidence-inspiring roadster handling
Skip If You Need
- You regularly ride two-up with a passenger across long highway weekend trips
- You demand 100+ horsepower hypersport acceleration for competitive track day riding
- You prefer wind-deflecting fairings over an open-air naked roadster design
Technical Deep Dive: The 660cc Triple Optimization, 6-Axis IMU, and Standard Shift Assist
1. 660cc Triple-Cylinder Engine Dynamics and Power Curve
The 660cc inline three-cylinder engine in the Trident 660 is engineered specifically to merge the low-end pulling torque of a parallel-twin with the free-revving top end of an inline-four. Featuring a 240-degree firing order and ride-by-wire fuel injection, it develops 81 PS at 10,250 RPM and 64 Nm of torque at 6,250 RPM. Critically, more than 90% of that maximum torque is delivered continuously from 3,600 RPM to 9,750 RPM, eliminating flat spots and minimizing the need to chase gear shifts in urban traffic.
2. 6-Axis Inertial Measurement Unit and Optimised Cornering Electronics
For 2026, Triumph integrated a state-of-the-art 6-axis IMU into the Trident 660's electronics architecture. The IMU measures roll, pitch, and yaw rates alongside longitudinal, lateral, and vertical accelerations. This sensory data powers Optimised Cornering ABS and Cornering Traction Control, automatically modulating braking force and throttle butterfly openings to maintain tire grip even when trail-braking deep into blind turns. A new 'Sport' ride mode joins Road and Rain, offering more immediate throttle response.
3. Standard Triumph Shift Assist and Showa SFF-BP Upgrades
Previously a $400 optional accessory, Triumph Shift Assist is now standard factory equipment on every 2026 Trident 660. The bi-directional quickshifter matches engine revs seamlessly for clutchless upshifts and auto-blipped downshifts. Suspension receives an upgrade with 41mm Showa Separate Function Forks Big Piston (SFF-BP), which separate spring and damping duties between fork legs to enhance high-frequency bump compliance over harsh city streets and uneven backroads.
4. Comparative Context and Naked Segment Value
Among middleweight naked bikes, the Trident 660 stands out for its standard specification. Riders seeking retro dirt style can explore the Royal Enfield Bear 650, while those wanting full liter-bike performance can check the KTM 990 Duke or Honda CB1000 Hornet SP. To evaluate financing options, utilize our motorcycle loan calculator or contrast detailed metrics using our interactive motorcycle comparison tool.
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Frequently Asked Questions
The 2026 Triumph Trident 660 starts at an MSRP of $8,595 USD for the standard colorways, while premium two-tone metallic paint schemes like Silver Ice Diablo Red retail for $8,720 USD.
Yes. For 2026, the Triumph Shift Assist bi-directional quickshifter comes as standard factory equipment, allowing clutchless upshifts and downshifts without purchasing an aftermarket or accessory add-on.
The 2026 model adds a 6-axis IMU supporting Optimised Cornering ABS and Cornering Traction Control, standard electronic cruise control, and a new 'Sport' riding mode alongside Road and Rain modes.
The 660cc triple engine produces 81.0 PS (80.0 HP / 59.6 kW) at 10,250 RPM and 64.0 Nm (47.2 lb-ft) of torque at 6,250 RPM, with over 90% of torque available across the entire rev range.
The Trident 660 has an approachable seat height of 805 mm (31.7 inches) and a road-ready wet curb weight of 190 kg (418.8 lbs) with a 90% full 14-liter fuel tank.
The Trident 660 offers a unique 3-cylinder engine layout delivering higher peak horsepower than the twin-cylinder MT-07, while including standard cornering electronics, quickshifter, and cruise control that rivals lack at this price point.