Triumph Bonneville 350: What to Expect?

The Bonneville is the only missing piece of the puzzle in Triumph’s entry-level model range in India. And as it turns out, the Bonneville 350 is under development. Being a 350cc, it should be a closer match to the Royal Enfield Classic 350. Although the bike is still some time away from going into production, here’s everything you need to know about the upcoming Triumph Bonneville 350.

Engine Configuration

The Triumph Bonneville 350 will be powered by a bored-down version of the 399cc motor that will displace around 349cc to benefit from the lower GST slabs. This liquid-cooled, single-cylinder motor will run a smaller bore while retaining the stroke. The lesser over-square layout is expected to result in better low and mid-range torque delivery, compared to the 399cc unit.

A quick back-of-the-envelope calculation suggests that the new 349cc engine could produce around 35bhp and nearly 33Nm of peak torque. Now, these aren’t official figures, and definitely lower than the 400 range, but the engine characteristics should suit the modern-retro flavour of the Bonneville 350.

Styling

We haven’t seen any test prototypes yet, so it would be difficult to talk about its design. However, Triumph is expected to carry the same design philosophy as the bigger Bonnies. Now, the existing 400 range lacks visual bulk, and Triumph is expected to course correct with the Bonneville 350.

We expect the Bonneville 350 to carry the same timeless classic styling from its bigger siblings. It could feature a large fuel tank, chunky fenders, bigger side panels, and a ribbed-pattern flat seat. Triumph is also expected to use a revised sub-frame and a longer swingarm to accommodate the larger bodywork. We can also expect some eye-catching paint schemes and a lot of chrome detailing.

Cycle Parts

The Bonneville 350 could differentiate itself from the existing 400-range in terms of hardware. We won’t be surprised if Triumph chooses to equip the Bonnie with telescopic forks and twin shocks to go with the classic styling of the Bonneville range.

That said, it is likely to ride on tubeless wire-spoke wheels to suit the bike's overall design language. We expect these to be similar to the cross-spoke units we have seen on the Scrambler 400 XC.

Expected Price and Launch Timeline

With the new 350cc engine, the Bonneville 350 will attract the lower 18 per cent GST, which should help Triumph to price it on par with the Classic 350. The latter is priced between Rs. 1.83 lakh and Rs. 2.18 lakh (ex-showroom), and we hope Triumph prices the Bonnie 350 similarly.

The existing Triumph 400 range will receive the 350 treatment in April 2026. However, the Bonneville 350 is still some time away, as we haven’t even seen any test mules of the bike on Indian roads. This makes us believe Triumph could launch the Bonnie sometime around the festive period (October to December 2026), or early next year.

Market Potential

Several manufacturers have introduced neo-retro motorcycles in the same segment as the Royal Enfield Classic 350, but the latter continues to dominate the sales charts. The upcoming Triumph Bonneville 350 has the potential to break that dominance, courtesy of its strong global brand recall.

That said, whether it manages to do so or not will depend on how the market reacts to it once the motorcycle goes on sale in India.