Triumph Bonneville 400 Spied Again Ahead of India Launch

The upcoming Triumph Bonneville 400 has been spotted testing in India once again, revealing fresh details about what could be one of the most important entries in the modern-retro segment.

Unlike the more roadster-focused Triumph Speed 400 and scrambler-styled Triumph Scrambler 400 X, the Bonneville 400 focuses towards its heritage design.

The test mule showcases classic Bonneville cues—teardrop-shaped fuel tank, long swept fenders, a flat bench seat, and a signature peashooter exhaust.

The bike also appears larger and more substantial than its 400cc siblings. The bulkier stance is accentuated by a bigger fuel tank, boxy side panels, and extensive chrome detailing across the crankcase, exhaust, and grab rails—elements that align it closely with the bigger Triumph Bonneville T100 and Triumph Bonneville T120.

As seen in the image, the Bonneville 400 gets telescopic front forks with gaiters, twin rear shock absorbers, and wire-spoke wheels instead of the USD fork and monoshock setup seen on other Bajaj-Triumph bikes in India. 

Powering the Bonneville 400 will likely be the same 349cc, single-cylinder, liquid-cooled engine seen in the Speed T4, although in a more relaxed state of tune to suit its laid-back, classic riding intent. For reference, in the T4, this engine produces around 29 hp and 31 Nm. 

The Bonneville 400 is expected to be priced in the same ballpark as the Royal Enfield Classic 350, Honda CB350, and Jawa 350.