Triumph Motorcycles, in collaboration with manufacturing partner Bajaj Auto, is preparing to introduce an all-new retro classic roadster to its Indian and global portfolio: the Triumph Bonneville 350 / 400. Slotted directly into the heritage cruiser space, the motorcycle adapts the design language of the iconic Bonneville T120 into a sub-400cc displacement class aimed straight at the segment-dominating Royal Enfield Classic 350, Honda H'ness CB350, and Jawa 350.
With an expected price bracket of ₹2.00 Lakh to ₹3.15 Lakh (ex-showroom), the motorcycle will arrive at dealership floors by mid-October 2026, tapping into high festive-season demand with standard, dual-tone, and chrome-accented trims.
Technical Specifications (Expected / Estimated)
| Parameter | Triumph Bonneville 350 / 400 |
| Engine Type | 350cc – 398cc, Liquid/Air-Oil Cooled, 4-Valve, Single-Cylinder |
| Max Power | ~28 – 35 hp @ 6,800–7,500 rpm |
| Peak Torque | ~32 – 36 Nm @ 4,000–5,500 rpm |
| Transmission | 6-speed gearbox with Assist & Slipper Clutch |
| Frame | Tubular steel cradle / backbone hybrid |
| Front Suspension | Traditional 41 mm telescopic front forks with rubber gaiters |
| Rear Suspension | Twin gas-charged shock absorbers with pre-load adjustability |
| Braking Setup | 320 mm disc (front) / 240 mm disc (rear) with Dual-Channel ABS |
| Wheel Setup | 18-inch front / 17-inch rear (Wire-spoke & Alloy options) |
| Fuel Capacity | 13.5 – 15 Litres |
| Expected Price | ₹2.00 Lakh – ₹3.15 Lakh (Ex-showroom, India) |
Design: Pure Bonneville T120 Heritage
Unlike the sporty, roadster silhouette of the Speed 400, the Bonneville 350/400 leans unapologetically into post-war classic British motorcycling:
Classic Fuel Tank: A wide, sculpted teardrop fuel tank fitted with rubber knee grip pads, chrome tank badges, and a polished Monza-style fuel cap.
Period Details: Ribbed bench seat, deep metal fenders, circular LED headlamp housed in a machined bezel, and circular rear-view mirrors.
Swept Exhaust: Straight-run exhaust header ending in a low-slung, peashooter silencer tuned for a deep, bass-heavy acoustic rumble.
Cockpit: Single-pod semi-digital console featuring an analogue needle for speed and an integrated LCD readout for gear position, fuel levels, service reminders, and distance-to-empty metrics.
Engine Character: Tuned for Low-End Chug
The Bonneville 350/400 draws power from a reworked variation of the TR-Series engine. Rather than chasing peak revs like naked street bikes, the camshaft profile and ignition mapping are calibrated for:
Tractable City Cruising: Strong low-to-mid range torque availability starting below 3,000 rpm, reducing gear changes in heavy traffic.
Highway Cruising: A counterbalanced crank assembly that dampens high-speed vibrations, allowing comfortable cruising speeds between 90 km/h and 115 km/h.
Thermal Management: Concealed radiator placement and machined cooling fins along the cylinder head preserve authentic air-cooled aesthetics while ensuring modern liquid-cooling reliability in extreme heat.
Hardware, Wheels & Ergonomics
Triumph has configured the Bonneville 350/400 for relaxed, upright riding ergonomics that suit both weekend leisure tours and daily commuting:
Riding Triangle: Forward-set footpegs, a neutral upright handlebar sweep, and a low, approachable seat height of approximately 795 mm to 800 mm.
Traditional Twin Shocks: In place of a rear monoshock, the motorcycle adopts twin hydraulic shock absorbers to maintain period correctness and load balance.
Wheel Options: Entry trims are expected to ship with tubeless machine-cut alloys, while heritage and top-tier chrome variants will offer wire-spoke wheels with tubeless tyre compatibility.
Variant Strategy & Expected Pricing
The expected ₹2.00 – ₹3.15 Lakh pricing range allows Triumph to target diverse budget tiers:
| Variant Tier | Estimated Ex-Showroom Price | Key Distinctions |
| Standard (Base) | ₹2.00 – ₹2.25 Lakh | Single-tone finishes, alloy wheels, standard dual-channel ABS, black engine finish |
| Heritage Edition | ₹2.40 – ₹2.65 Lakh | Dual-tone tank paint, wire-spoke wheels, rubber knee pads, brushed aluminum engine casings |
| Bonneville Chrome Line | ₹2.85 – ₹3.15 Lakh | Full chrome fuel tank, diamond-quilted leather seat, bar-end mirrors, standard flyscreen |
Market Positioning: The Royal Enfield Classic 350 Challenge
The 350cc modern classic segment has long been anchored by the Royal Enfield Classic 350. The Bonneville 350/400 delivers a clear alternative for buyers seeking heritage styling combined with modern mechanical refinement:
Power & Transmission Advantage: While the Classic 350 makes roughly 20.2 hp paired with a 5-speed box, the Bonneville’s modern powertrain delivers stronger roll-on acceleration and a 6th gear for relaxed highway cruising.
Weight Management: With targeted kerb weight under 180 kg, the Triumph offers more agile slow-speed manoeuvrability than legacy steel-frame roadsters.
Direct Rivals: Along with the Classic 350, it contends directly with the Honda H'ness CB350, the Jawa 350, and the Harley-Davidson X440.
Launch Timeline and Booking Details
Bajaj Auto is manufacturing the Bonneville 350/400 at its dedicated Chakan 2 facility in Maharashtra, serving both the Indian domestic market and key export hubs across Europe and Southeast Asia.
Dealer previews are set for mid-October 2026, with official online and dealership bookings opening nationwide ahead of Diwali deliveries.
Frequently Asked Questions (FAQ)
What is the expected launch date of the Triumph Bonneville 350 / 400?
The motorcycle is scheduled for official commercial unveil and market introduction in mid-October 2026, right in the middle of India's festive shopping season.
What is the estimated price of the Triumph Bonneville 350 / 400 in India?
Prices are anticipated to start from ₹2.00 Lakh for the entry-level trim and go up to ₹3.15 Lakh (ex-showroom) for the range-topping Chrome Heritage package.
How does the Bonneville 350/400 differ from the Triumph Speed 400?
The Speed 400 is an aggressive modern street roadster featuring upside-down forks, rear monoshock, and sporty ergonomics. The Bonneville 350/400 adopts authentic retro cruiser styling with traditional telescopic forks, twin rear shocks, a relaxed seating posture, and classic peashooter exhausts.
Will the Bonneville 350/400 feature spoke wheels?
Yes, Triumph is expected to offer both alloy wheels for convenience and classic wire-spoke wheels on the Heritage and Chrome variants.
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