The Triumph Trident 660 shook up the middleweight category when it was introduced in 2021 by hitting three key points: value, performance, and practicality. Five years after its debut, the 2026 Triumph Trident 660 still champions those core pillars, bringing notable upgrades to its chassis, electronics, and above all, its triple-cylinder engine for a $550 price hike over last year’s model.

1. The 659cc engine gets an upgrade, or a replacement, depending on how you look at it. No motorcyclists worth their salt will ever turn down extra performance. To that end, the inline-three produces a claimed 94 horsepower at 11,250 rpm and 50 lb-ft of torque at 8250 rpm, representing a nod-worthy 14-pony increase over its predecessor. In addition, the redline is pushed upward to 12,650 rpm and, per the usual for most naked sportbikes these days, the rev-happy triple engine with its 240-degree firing order makes 80 percent of its peak torque at an easily accessible 3000 rpm.

2. Astute readers might recall that these cited figures sound close to what’s in the Daytona 660. That’s because the Trident is using the Daytona engine with a Trident-specific tune.

3. What’s different about the 2026 Trident 660’s engine? Let’s dig into it. Compared to the prior-gen Trident 660, its new mill has plenty of changes. Instead of using a single, shared throttle body across all three cylinders, there are three independent 44mm throttle bodies. This allows engineers to fine-tune power delivery across the rev range. Those throttle bodies are fed oxygen by a larger airbox. Internal changes also boost performance through a revised cylinder head that incorporates larger exhaust valves and higher-lift cams. An updated 3-into-1 stainless steel exhaust rounds out powerplant-related changes. To manage its extra performance, the radiator fan is larger and repositioned compared to the outgoing variant.

 

4. A six-speed gearbox and bi-directional quickshifter are standard. Updates compared to the old mill trickle down further, with Triumph highlighting that the gearbox’s input and output shafts are new. On top of that, the gearbox uses updated gear ratios, working in conjunction with a new slip-and-assist clutch, to improve ease of use. Lastly, the quickshifter is recalibrated for sportier intent.

5. Revised suspension and chassis come into the fold for 2026. While the tubular steel frame is tweaked, its overall geometry remains identical — the frame update simply accommodates the new throttle bodies. Returning for another tour of duty is the sturdy, non-adjustable 41mm Showa fork. However, the Showa shock now features both spring preload and rebound damping adjustments. Michelin Road 5 tires are laced up to the same cast-aluminum wheels as last year.

6. Nissin calipers do the heavy lifting once again. Braking hardware on the Trident 660 is more than adequate, with axial-mounted two-piston Nissin calipers clamping onto 310mm discs in the front. In the rear, it’s the same single-piston Nissin caliper and 255mm rotor helping to slow things down.

7. Rider aids informed by a six-axis IMU are optimized for 2026. The Trident 660 platform gained a suite of sophisticated electronics in 2025. This year, the British brand says it has refined its cornering ABS and switchable traction control algorithms. Naturally, those features integrated three selectable ride modes: Sport, Road, and Rain. Those modes can be explored via the same basic LCD/TFT hybrid dash as prior Trident 660s. Also, cruise control is now standard.

8. Styling updates give the Trident 660 a more muscular roadster presence. New bodywork complements a wider, sculpted fuel tank with classic chiseled knee cutouts and the same 3.7-gallon capacity. There’s also a new split-seat design, revised headlight and mount, and updated graphics. Detail doesn’t elude Triumph, with subtle branding placed throughout the machine, as well as neatly hidden cables and hoses.

9. The overall rider triangle remains remarkably close to previous-generation units. The most significant change in ergonomics is the wider handlebar, which increases steering leverage on this historically agile motorcycle. The accumulation of changes adds 11 pounds to the Trident 660’s curb weight. We don’t see it as a bad thing: the narrow-waisted packaging and accessible 31.9-inch seat make the Trident 660 a motorcycle suitable for shorter-statured riders. Still, it remains spacious enough to handle leggier individuals.

10. Expect units to arrive Stateside next month with a $9145 MSRP. Your color choice is between Cosmic Yellow and Stone Grey.

2026 Triumph Trident 660 Specs

ENGINE 

• Type: Inline-3
• Displacement: 659cc
• Bore x stroke: 74.0 x 51.1mm
• Maximum power: 94 horsepower @ 11,250 rpm
• Maximum torque: 50 ft-lbs @ 8250 rpm
• Compression ratio: 12:1
• Valvetrain: DOHC; 4 vpc
• Exhaust: Stainless steel
• Transmission: 6-speed w/ quickshifter
• Clutch: Wet multiplate w/ assist and slipper functions
• Final drive: X-ring chain 

CHASSIS 

• Frame: Tubular steel perimeter w/ steel swingarm
• Front suspension; travel: Non-adjustable Showa SFF-BP inverted 41mm fork; 4.7 inches
• Rear suspension; travel: Linkage-free, spring-preload and rebound-adjustable Showa shock; 5.1 inches
• Wheels: 5-spoke cast aluminum
• Front wheel: 17 x 3.5
• Rear wheel: 17 x 5.5
• Tires: Michelin Road 5
• Front tire: 120/70 x 17
• Rear tire: 180/55 x 17
• Front brakes: 310mm discs w/ Nissin 2-piston calipers
• Rear brake: 255mm disc w/ Nissin single-piston caliper
• ABS: Cornering-aware 

DIMENSIONS and CAPACITIES 

• Wheelbase: 55.2 inches
• Rake: 24.5 degrees
• Trail: 4.25 inches
• Seat height: 31.9 inches
• Fuel capacity: 3.7 gallons
• Estimated fuel consumption: 58 mpg
• Curb weight: 430 pounds
• Colors: Cosmic Yellow; Stone Grey 

2026 Triumph Trident 660 Price: $9145 MSRP

2026 Triumph Trident 660 Photo Gallery