The Triumph Bonneville 400 is expected to launch in India around August to October 2026 at an estimated price of Rs 2 to 2.5 lakh (ex-showroom). It will use a 349cc single-cylinder liquid-cooled engine producing around 29 HP and 31 Nm of torque. Spy photos confirm a classic round LED headlamp, chrome peashooter exhaust, wire-spoke wheels, and dual-channel ABS. Here is everything we know so far about the upcoming Bonneville 400, including specs, competition, and what the spy shots reveal.
Triumph Bonneville 400 Expected Specs
The Bonneville 400 will share its engine platform with the Triumph Speed 400 and Scrambler 400, but tuned for a more relaxed, retro-cruiser feel. Here are the expected numbers:
| Spec | Expected Detail |
|---|---|
| Engine | 349cc single-cylinder, liquid-cooled |
| Power | ~29 HP |
| Torque | ~31 Nm |
| Gearbox | 6-speed |
| Kerb Weight | ~176 kg |
| Fuel Tank | ~13 litres |
| Seat Height | ~790 mm |
| Top Speed | ~120 km/h |
| Mileage | ~30-35 kmpl (real world estimate) |
| Brakes | Front and rear disc with dual-channel ABS |
| Front Suspension | Telescopic forks |
| Rear Suspension | Twin coil-spring shocks |
The 349cc engine is the same base unit found in the Speed 400 and Scrambler 400, but the Bonneville version is expected to be tuned for smoother low and mid-range delivery rather than outright performance. For daily riding in Indian traffic, this kind of tuning makes more sense than chasing peak power numbers.
Expected Price in India
Price estimates vary slightly depending on the source, but all point to the Rs 2 to 2.5 lakh range:
| Source | Estimated Price (ex-showroom) |
|---|---|
| Autocar India (Apr 2026) | Below Rs 2 lakh |
| BikeWale (May 2026) | Rs 2.00-2.20 lakh |
| BikeDekho (2026) | Rs 2.25 lakh |
| ZigWheels (Apr 2026) | ~Rs 2.50 lakh |
If Triumph prices it closer to Rs 2 lakh, it directly undercuts the Harley-Davidson X440 (Rs 2.35-2.59 lakh) while offering a more refined classic design. At Rs 2.5 lakh, it sits at a slight premium over the Royal Enfield Classic 350 (Rs 1.81-2.16 lakh) but brings a liquid-cooled engine, more power, and better braking hardware.
Launch Date: When Is It Coming?
Multiple sources point to a second half 2026 launch in India:
- Autocar India (April 2026) says the bike will likely go on sale by the festive season
- BikeWale (May 2026) lists August 2026 as the expected launch month
- TheBikeJunction (April 2026) reports September or October 2026 as possible
The festive season timeline (August to October) makes strategic sense for Triumph. That is when buying activity peaks in India, and launching during that window would maximize initial bookings.
What Spy Photos Reveal
Bonneville 400 spy photos have been spotted across multiple test locations in India, and they confirm several design and hardware details:
Round LED headlamp in the classic Bonneville style. This is the signature element and it stays unchanged from the larger Bonneville models.
Chrome peashooter exhaust giving the bike a traditional look. This is a departure from the modern styling on the Speed 400 and Scrambler 400.
Conventional telescopic front forks (not upside-down). Rear gets twin coil-spring shocks. This setup is lighter and more suited to the relaxed cruiser character of the bike.
Front and rear disc brakes with dual-channel ABS. Spy images show the front disc mounted on the right side, similar to larger Bonneville models.
Single round instrument pod, likely a full-digital or TFT display. This is where the modern touches come in without breaking the classic look.
Wire-spoke wheels with traditional tyre sizes, keeping the retro aesthetic intact.
Overall, the bike looks balanced and not overdone. It carries the Bonneville DNA without trying to look aggressive or sporty, which is exactly what this segment needs.
How It Compares to Rivals
This is the segment where the Bonneville 400 will have to prove itself. Here is how it stacks up against the key competitors:
| Bike | Engine | Power | Torque | Weight | Price (Rs) | Key Strength |
|---|---|---|---|---|---|---|
| Triumph Bonneville 400 | 349cc single, liquid-cooled | ~29 HP | ~31 Nm | ~176 kg | 2.00-2.50 lakh (est.) | Liquid-cooled engine, Triumph brand, modern tech |
| Royal Enfield Classic 350 | 349cc single, air-cooled | 20.2 HP | 27 Nm | 195 kg | 1.81-2.16 lakh | Massive dealer network, proven reliability, low-end torque |
| Honda CB350 | 348cc single | 20.7 HP | 29.5 Nm | 186 kg | 1.97-2.00 lakh | Refined engine, slipper clutch, Honda reliability |
| Harley-Davidson X440 | 440cc single | 27 HP | 38 Nm | 190.5 kg | 2.35-2.59 lakh | Harley brand value, more torque, cruiser stance |
| Jawa 350 | 334cc single | 22.3 HP | 28.1 Nm | 194 kg | 1.82-2.21 lakh | Strong retro design, good low-mid torque |
The Bonneville 400 has a clear advantage in power output. At 29 HP, it is almost 9 HP more than the Classic 350 and 8 HP more than the Honda CB350. It is also the lightest bike on this list at an estimated 176 kg, which means it should feel more agile than any of the rivals.
The main risk is price. If Triumph prices it above Rs 2.3 lakh, buyers might look at the Harley X440 which offers 440cc displacement and the Harley badge. If it stays around Rs 2 lakh, it becomes a very strong alternative to the Classic 350 with significantly better performance.
For a detailed comparison of SUVs in a similar “classic vs modern” battle, check out our Tata Sierra vs Hyundai Creta 2026 comparison where we break down a similar value debate.
Who Should Wait for This Bike?
The Bonneville 400 makes sense for a specific kind of rider. If you want classic retro styling but do not want to compromise on engine refinement, this is worth waiting for. The liquid-cooled engine will run smoother and handle heat better than the air-cooled motors in the Classic 350 and Jawa 350, especially in Indian summer traffic.
If you are upgrading from a 150-200cc bike and want something premium without going above Rs 2.5 lakh, this sits in a sweet spot. You get Triumph’s build quality, better performance than most 350cc bikes, and a design that does not try too hard.
But if outright torque matters more to you and you want that cruiser pull, the Harley X440 with its 38 Nm might be a better fit. And if budget is the top priority, the Classic 350 still offers unbeatable value with the widest service network in India.
If you are exploring what else is coming from Triumph in the affordable segment, read our Triumph 350cc India release 2026 guide for the full picture of Triumph’s India plans.
FAQ
What is the expected price of the Triumph Bonneville 400 in India? The Bonneville 400 is expected to cost between Rs 2 lakh and Rs 2.5 lakh (ex-showroom). Autocar India estimates it could start below Rs 2 lakh, while ZigWheels estimates closer to Rs 2.5 lakh.
When will the Triumph Bonneville 400 launch in India? Most reports point to a launch in the second half of 2026. BikeWale lists August 2026, while other sources say September or October 2026 during the festive season.
What engine does the Triumph Bonneville 400 use? It uses a 349cc single-cylinder, liquid-cooled engine from Triumph’s TR series. This is the same base platform as the Speed 400 and Scrambler 400, retuned for a more relaxed cruiser character.
How much power does the Bonneville 400 produce? Expected output is around 29 HP and 31 Nm of torque. This is significantly more than the Royal Enfield Classic 350 (20.2 HP) and Honda CB350 (20.7 HP).
Is the Triumph Bonneville 400 good for daily riding? Yes. At an estimated 176 kg, it is lighter than most rivals. The upright riding position, 790 mm seat height, and smooth power delivery should make it comfortable for city traffic and short highway rides.
How does the Bonneville 400 compare to the Royal Enfield Classic 350? The Bonneville 400 has roughly 9 HP more power, is about 19 kg lighter, and uses a modern liquid-cooled engine compared to the Classic 350’s air-cooled motor. The Classic 350 wins on price and has a much larger dealer and service network across India.
What mileage can the Triumph Bonneville 400 deliver? Real-world mileage is estimated at 30 to 35 kmpl based on the 349cc engine specs. The Classic 350 with its 20 HP engine delivers similar mileage, so the Bonneville’s more powerful 29 HP motor may sit at the lower end of that range.
What are the key features confirmed from spy photos? Spy photos confirm a round LED headlamp, chrome peashooter exhaust, wire-spoke wheels, telescopic front forks, twin rear shocks, disc brakes with dual-channel ABS, and a single round digital instrument cluster.
Triumph Bonneville 400: Price, Launch Date, Specs and Spy Details
