2027 Triumph Bonneville T40 First Look: Classic Style, New Tech

Triumph continues to grow its entry-level-friendly 400cc family, and this time around, the new models carry the brand’s most enduring name in its catalog. Meet the 2027 Triumph Bonneville T40 and T40 Black, the latest additions to the British marque’s Modern Classic lineup, powered by an updated version of its existing TR Series single-cylinder engine. The new-rider-friendly Bonneville T40 lineup delivers authentic Bonnie style in a smaller, lighter and arguably more user-friendly package for those coming into the two-wheeled fold.

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Pricing has not been announced. Triumph says it will confirm pricing for both models in early 2027, with the first bikes reaching dealerships in spring 2027.

The Bonneville name was lifted from the brand’s land-speed record success at the legendary Bonneville Salt Flats in 1956. Since the Bonneville launch in 1959, the range has been powered by parallel-twin engines of various sizes over the years, making the T40 and T40 Black the first single-cylinder motorcycles to ever wear the Bonneville badge.

Triumph launched the 400cc TR Series engine in the Speed 400 and Scrambler 400 X in 2023, which quickly saw the range grow to include the Scrambler 400 XC, Tracker 400 and Thruxton 400 models. Triumph states that this platform, built in association with Indian manufacturer Bajaj Auto, has sold over 60,000 units since its debut. Now, let’s dig into the baby Bonnies.

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Engine: The TR Single Receives Bonneville Character Updates

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The T40 and T40 Black use the latest iteration of Triumph’s liquid-cooled, single-cylinder 400cc TR Series engine, significantly reworked to fit its Bonneville brief. Starting on the outside, we’ll find a new cylinder head featuring old-school, air-cooled-style machined cooling fins like we’d see on the larger Bonneville T100 or T120 siblings.

Moving internally, brand representatives highlighted a model-specific camshaft with less overlap than other TR Series powerplants, said to help deliver torque earlier in the rev range. Combining the revised head and cam with a unique tune, airbox and exhaust system, the T40s aim to deliver a classic torquey Bonneville experience out of the thumper single-cylinder mill.

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Claimed peak performance is cited at 30 horsepower at 7,000 rpm and 26.6 lb-ft of torque at 5,000 rpm. Triumph also says that it has worked on the exhaust note from the Bonneville-style peashooter silencer to bolster the experience. Although not applicable to the North American market, both models are A2 license-compliant as standard.

Tech: Vintage Looks, Modern Gadgets and Rider Aids

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Triumph says that the T40 platform features class-leading technology, and within the standard bike class, that is true. A new circular 4-inch full-color TFT display is designed to tug at classic Bonneville styling strings, while also meeting the demands of today’s riders. Leaning into that motif, the instrument panel offers a Heritage Mode UI that swaps the standard interface out for an analog-style display inspired by traditional clocks. Riders can navigate said display via a backlit left-hand switch cube.

Bluetooth smartphone connectivity is standard, covering the usual features such as calls, messaging and media. In addition, riders can access navigation while using the Triumph Navigation App, which displays a live map on the TFT. The app also integrates route planning, waypoints and GPX imports, meaning riders can share or plan excursions with friends.

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Notably, the baby Bonnies include advanced rider aid features once reserved for pricey, high-end models. IMU-supported rider aids include cornering ABS and traction control. Conventional cruise control is also standard. Five ride modes are offered: Road, Rain and Eco, in addition to two customizable modes that allow owners to adjust throttle maps, traction control and ABS settings.

Lighting is full LED, with a daytime running light signature and automatic switching between DRL and low beam. Self-canceling turn signals, Emergency Deceleration Warning, which flashes the rear light under hard braking, and a USB-C charging socket round out the comprehensive technology package.

A True-Blue Bonneville: Chassis and Ergonomics

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The T40 machines ride on a dedicated chassis, designed specifically to accommodate iconic Bonneville elements such as the non-adjustable traditional 43mm fork featuring rubber fork gaiters and preload-adjustable twin rear shocks. 5.1 inches of suspension travel is available at each end. One of the critical differences between the frame seen here and those on other TR Series-powered Triumphs is that the T40 and T40 Black feature a welded subframe, as opposed to a bolt-on subframe. The 18-/17-inch tube-type wire-spoke wheels also fit the Bonnie aesthetic. Claimed wet weight is 421 pounds and chassis geometry is relatively svelte, keeping in tradition with Bonneville’s as a whole, which we hope also equates to a fairly agile motorcycle.

Braking comes to us via an axial-mounted dual-piston ByBre caliper, the budget brand of Brembo, clamps on a 310mm disc. That hardware is hooked up to an axial master cylinder via steel-braided brake lines, which may improve brake feel. A single-piston ByBre caliper handles braking duties in the rear.

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Seat height is an accessible 31.1 inches tall, which we hope will be made even less of a hurdle due to the narrow single-cylinder engine width. An accessory low seat, available in black or brown, drops the seat height to 30.3 inches.

The riding position is upright, and the ribbed bench saddle is said to offer generous padding for both rider and passenger. A center stand is standard, making storage, cleaning and chain maintenance easier.

Authentic Style Cues Come into the Picture

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The T40 motorcycles draw directly on the 1960s Bonneville design, wisely incorporating all the immediately recognizable cues we’ve come to know. That includes a sculpted 3.8-gallon fuel tank featuring rubber knee pads and three-bar Triumph badging, long metal fenders, a round LED headlight and a peashooter silencer. Other elements fall in line with the current-generation Modern Classic family, which include brushed aluminum clutch and alternator covers. Triumph branding is embossed on the handlebar clamp and front fender, while the brand says that the motorcycles are finished by hand.

The standard T40 receives chrome mirrors and grab rail, brushed aluminum heel guards and a brushed steel exhaust. It comes in two two-tone schemes with hand-painted coach lining: Meriden Blue and Tangerine Orange, and New England White and Jet Black. However, markets outside North American markets can anticipate a third Aegean Blue and Fusion White two-tone colorway.

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The T40 Black follows the same blacked-out motif we’ve seen from other Black models, wearing Matt Pewter Grey and Matt Phantom Black, with gloss-black rims, bright steel spokes, powder-coated engine casings and a blacked-out header and silencer. Its other components are painted or powder-coated black.

Pricing and Availability

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Pricing for the 2027 Triumph Bonneville T40 and T40 Black is not available at this time, with Triumph stating that it will release pricing in early 2027. Dealership availability in the United States is slated for spring 2027.

Expect full pricing in early 2027 and dealer arrivals from spring 2027.

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