Triumph is expanding its TR range for 2027 with two new Bonneville models, the T40 and T40 Black. They are the first motorcycles in the family to carry the Bonneville design language so directly into the smaller-capacity class: rounded styling, twin rear shocks, spoked wheels and two-tone finishes. The equipment is not limited to heritage cues, either. Both bikes come with a TFT display, Bluetooth connectivity, cornering ABS, traction control and cruise control.

A revised 398 cc engine with a calmer brief

The T40 pair uses a revised version of the TR single-cylinder engine family also found in the Speed 400, Scrambler 400X and Tracker 400. Its capacity is stated as 398 cc. Triumph has developed a new cylinder head with cooling fins for the Bonneville models and added a dedicated engine tune. The result is not simply a carry-over motor placed beneath new bodywork; the power delivery has been shaped around the more traditional character expected from these motorcycles.

Peak torque is 36 Nm at 5,000 rpm, while peak power is 32 PS at 7,000 rpm. For comparison, the Speed 400 is listed with 37.5 Nm at 6,500 rpm and 39.5 bhp. Those figures explain the T40’s position in the range. Rather than chasing the livelier roadster’s outright output, the Bonneville uses a lower torque peak and a softer overall emphasis. That should suit relaxed road riding and smooth progress without making frequent gear changes central to the experience.

The mechanical changes extend beyond the headline figures. The engine sits more upright in the frame, while the finned cylinder head, revised tune and exhaust system support both the intended delivery and the character of the bike. The chassis is dedicated to the T40 models and uses conventional front forks with twin rear shocks. The twin-shock layout is therefore more than a suspension choice: it is part of the visual architecture that gives the Bonneville its classic profile.

Classic presentation, contemporary electronics

The electronics package is substantially more current than the styling suggests. There are three preset riding modes—Road, Rain and Eco—as well as two customisable settings. The modes alter throttle response, traction control and ABS, and can be selected while riding through the handlebar controls. Lean-sensitive traction control and cornering ABS are standard, giving the rider assistance that responds to the motorcycle’s attitude as well as the selected mode.

Cruise control is also standard, as is Emergency Deceleration Warning. Under heavy braking, the system flashes the rear light to make the sudden reduction in speed more obvious to traffic behind. It is a useful contrast with the deliberately old-fashioned appearance: the Bonneville formula is being used here with safety and convenience functions expected from a modern motorcycle.

Instrumentation comes from a new four-inch circular colour TFT. One available presentation places the essential information inside a single-dial layout inspired by an analogue speedometer, including an odometer styled after a mechanical unit. More modern display themes are also available when a denser presentation is preferred. Bluetooth connectivity adds navigation, music control and phone calls through the switchgear, extending the bike’s usefulness beyond its visual theme.

A chassis aimed at approachable riding

The T40 models use spoked wheels with lightweight aluminium rims and steel spokes. The front wheel measures 18 inches and the rear 17 inches. An upright riding position, a 790 mm seat height and a 191 kg ready-to-ride weight form a package intended to be manageable rather than overtly sporty. Riders who need a lower reach can specify the optional low seat, which reduces the seat height to 770 mm.

Braking is handled by a single front disc and a twin-piston caliper, with braided lines included as standard. A factory centre stand adds useful practicality for parking and routine chain work. Together with the conventional fork and twin shocks, the layout reinforces the T40’s easy-going brief while retaining the proportions that make the motorcycle recognisable as a Bonneville.

Black treatment or traditional colour

The Bonneville T40 Black applies the same basic formula with a darker finish. Its two-tone paint combines Matt Pewter Grey and Matt Phantom Black, while the engine casings, exhaust and aluminium wheel rims receive black treatment. The bright steel spokes remain visible against the dark rims, preserving the familiar wire-wheel contrast while giving the motorcycle a more restrained appearance.

The standard T40 takes the more traditional route. Its three two-tone combinations are Aegean Blue/Fusion White, Meriden Blue/Tangerine Orange and New England White/Jet Black. Each uses hand-painted coach lining, a detail that supports the heritage-led finish without changing the underlying equipment or chassis. Triumph is expected to announce UK prices in early 2027, while the first motorcycles are expected to reach dealerships from spring 2027. No Greek pricing or arrival timetable is stated here.