Triumph Unveils the Bonneville T40 Single-Cylinder Retro Motorcycle for Spring 2027 Release
British motorcycle manufacturer Triumph has announced the upcoming release of the Bonneville T40, a new 400cc single-cylinder retro machine built in partnership with Indian manufacturer Bajaj. Motorkáři.cz reported that the motorcycle combines the classic styling of Triumph’s larger T100 and T120 twin-cylinder models with the Bajaj-produced single-cylinder technical platform shared with existing 400cc models like the Scrambler 400 and Speed 400.
Engine Performance and Technical Specifications of the T40
The Bonneville T40 uses the same basic “TR Series” single-cylinder engine platform as its stablemates but features a newly designed cylinder head and a retuned output. According to Motorkáři.cz, the motor produces a relaxed 32 horsepower at 7,000 rpm and a peak torque of 36 Nm at 5,000 rpm, trading the higher-revving sportiness of the Thruxton 400 and Tracker 400 for lower-rpm tractability. The motorcycle carries a wet weight of 191 kilograms and features a lower idle speed alongside a traditional “peashooter” exhaust style, faux cooling fins, and hidden fuel injection.
Frame and Chassis Modifications for a Classic Stance
While sharing parts of its primary frame with other 400cc models in the lineup, the T40 incorporates a unique, fixed rear subframe rather than the bolt-on subframes used on its sibling motorcycles. Motorkáři.cz noted that the engine is rotated a few degrees further back within the frame, while the suspension relies on traditional telescopic front forks with dust boots and dual rear shock absorbers. The machine rides on wired, spoked wheels pairing an 18-inch front aluminum rim with a 17-inch rear rim, anchored by a single 310mm front brake disc gripped by a Bybre two-piston caliper mounted on the right side.
Modern Electronics Inside a Retro Package
The T40 maintains 1960s aesthetic cues through a 14.5-litre sculpted fuel tank featuring knee pads and hand-painted pinstriping, paired with a 790mm flat bench seat that includes a passenger grab rail. Motorkář.cz reported that the rider interface consists of a round TFT display featuring a retro graphical mode that simulates an analog speedometer alongside integrated turn-by-turn maps. Safety electronics include cornering ABS and traction control, while a central stand is included as standard equipment.
Triumph Bonneville T40 Arrives in Spring 2027
Triumph plans to offer the Bonneville T40 in three standard two-tone paint schemes—black and white, blue and white, and blue and orange—alongside a stealthier, chrome-free “T40 Black” edition. Motorkáři.cz stated that official pricing remains unannounced, with the first production models scheduled to arrive at dealerships in the spring of 2027.
Frequently Asked Questions About the Triumph Bonneville T40
Who manufactures the engine for the Triumph Bonneville T40?
The engine is built through a production partnership with Indian manufacturer Bajaj at its factory in India, utilizing the shared TR Series single-cylinder platform.
What is the seat height of the Bonneville T40, and are lower options available?
The standard flat seat sits at a height of 790mm, and Triumph provides an optional lowered seat accessory that reduces the height to 770mm for shorter riders.
When will the Bonneville T40 become available for purchase?
The first customer deliveries are scheduled to begin in the spring of 2027, with retail pricing expected to be revealed shortly before the launch date.
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