Triumph Bonneville 400 Review (2026): Specs, 40 PS & Price
The authentic British modern classic accessible to all. Powered by a 398.15cc TR-Series single (40 PS / 37.5 Nm), timeless wire-spoke wheels, teardrop dual-tone tank with rubber knee pads, brown ribbed bench seat, dual pea-shooter exhaust styling, and ₹2.40 Lakh est. price.
The Strengths
- Refined 398.15cc TR-Series single engine with liquid cooling and rich 37.5 Nm low-end torque pull
- Timeless Bonneville styling with chrome teardrop tank, wire-spoke wheels, and dual pea-shooter exhaust finish
- Comfortable 790mm accessible seat height with plush dual-density brown leather bench seating
- Bosch dual-channel ABS and switchable Triumph Traction Control (TTC) for wet tarmac security
- High build quality with machined engine cooling fins, brushed aluminum badges, and premium paintwork
The Compromises
- 13-liter fuel capacity limits highway touring range to roughly 380 km between fuel stops
- Classic tube-type wire-spoke wheels require puncture tube maintenance compared to cast alloy wheels
- Upright unfaired roadster geometry catches headwind at speeds above 120 km/h
398.15cc Liquid-Cooled 4-Valve DOHC TR-Series Single Engine
Machined cooling fins, DLC-coated finger followers, balancer shaft, and Bosch electronic fuel injection.
Acceleration Telemetry, Top Speed Runs & Fuel Economy Benchmarks
Tested VBOX acceleration sprints, GPS top speed runs, and real-world fuel economy figures.
Classic Wire-Spoke Wheels, Teardrop Fuel Tank & Pea-Shooter Exhaust
Hybrid spine tubular steel frame, bolt-on rear subframe, and twin cradle architecture.
Chassis Specifications
- Tubular steel perimeter frame with bolt-on rear subframe delivering nimble handling and classic proportions
- 17-inch front (110/70-17) and 17-inch rear (140/70-17) classic wire-spoke wheels with chrome rim finish
- 43mm inverted big-piston front forks providing 140mm travel for smooth bump compliance over broken roads
- Rear gas-charged monoshock with external reservoir and step-preload adjustment providing 130mm travel
- 300mm front disc with ByBre radial 4-piston caliper and 230mm rear disc backed by Bosch dual-channel ABS
- Dual pea-shooter styled stainless steel exhaust silencers with brushed heat shields delivering an authentic British thrum
Ribbed Brown Leather Bench Seat, Analogue-LCD Dials & LED Lighting
Wide swept-back chrome handlebar, bar-end mirrors, and 790mm accessible saddle height.
Cockpit & Ergonomics Features
- Classic analogue speedometer dial paired with integrated multi-functional LCD screen showing gear indicator, fuel, and clock
- 790mm low seat height combined with narrow waist profile ensuring comfortable flat-footing for riders of all heights
- Ribbed brown leather bench saddle providing ample room for two-up riding and weekend getaway luggage
- Round chrome LED headlamp with signature Triumph triangle daytime running light (DRL) badge
- Handlebar-mounted USB-C charging port for smartphone navigation during inter-city touring runs
Complete 30-Point Technical Specification Matrix
Comprehensive engineering data, mechanical parameters, and dimensions for the Triumph Bonneville 400.
1. Engine, Powertrain & Performance Architecture
Engine Specifications
Transmission & Electronics
2. Chassis, Suspension, Brakes & Dimensions
Chassis & Suspension
Brakes & Dimensions
3. Real-World Benchmarks, Pricing & Ownership
Performance Benchmarks
Commercial & Pricing
Is the Triumph Bonneville 400 the Ultimate Accessible Modern Classic?
Buy If You Want
- Authentic Bonneville heritage styling with wire-spoke wheels and chrome accents
- Punchy 40 PS TR-Series engine delivering effortless 100-110 km/h highway cruising
- Comfortable 790mm seat height and relaxed upright roadster ergonomics
- Class-leading 16,000 km service intervals and high fit-and-finish levels
Skip If You Need
- An aggressive aggressive sportbike setup with full track fairings (e.g. KTM 990 RC R)
- A heavy-duty off-road scrambler with 19-inch front wheels (e.g. Scrambler 400X)
Triumph Bonneville 400: 40 PS TR-Series Dyno, Wire-Spoke Chassis & Road Test
Following the global success of the Speed 400 and Scrambler 400X, Triumph expands its single-cylinder family with the most iconic nameplate in motorcycle history: the Bonneville. The Bonneville 400 blends classic 1960s aesthetics with the 40 PS TR-Series engine. Compare it against roadster siblings in our Triumph Speed 400 review, explore dual-sport alternatives in the Scrambler 400X review, and see head-to-head roadster shootouts in our Guerrilla 450 vs Speed 400 comparison.
1. 398.15cc TR-Series Engine & Low-End Torque Dynamics
The Bonneville 400 is powered by the 398.15cc liquid-cooled 4-valve DOHC single producing 40.0 PS at 8,000 RPM and 37.5 Nm of torque at 6,500 RPM. Paired with a torque-assist slipper clutch and 6-speed gearbox, it pulls smoothly from 2,500 RPM in traffic. For retro scrambler alternatives, read our Royal Enfield Bear 650 review, explore big-single roadsters in the BSA Gold Star 650 review, and check naked streetfighters in our KTM Duke 390 review.
2. Wire-Spoke Wheels, Teardrop Tank & Heritage Craftsmanship
Unlike the cast-wheel Speed 400, the Bonneville 400 is equipped with classic 17-inch wire-spoke wheels, a teardrop fuel tank with rubber knee bolsters, and pea-shooter exhaust pipes. 43mm inverted big-piston front forks and a rear gas monoshock provide supple compliance over uneven road surfaces. For supersport alternatives, explore our KTM 990 RC R review and see middleweight V-twin roadsters in the Ducati Monster V2 review.
3. Ergonomics, Pricing & Market Competitors
Priced around ₹2.40 Lakh ex-showroom ($5,695 USD / £5,195 UK), the Bonneville 400 offers an accessible 790mm seat height with 16,000 km service intervals. Compare with upcoming adventure launches like the Royal Enfield Himalayan 440 preview, review dual-fuel commuters in our Bajaj Freedom 125 CNG review, and see Pakistani market benchmarks in our Honda CG 125 2026 review.
🌿 Related Models & Comparison Guides
Frequently Asked Questions
The Triumph Bonneville 400 is expected to retail at an ex-showroom price of ₹2.40 Lakh to ₹2.55 Lakh in India ($5,695 USD in North America / £5,195 in the UK).
It is powered by Triumph's 398.15cc liquid-cooled 4-valve DOHC single-cylinder TR-Series engine producing 40.0 PS (39.5 bhp) at 8,000 RPM and 37.5 Nm of torque at 6,500 RPM.
The Bonneville 400 features authentic wire-spoked tubeless wheels, teardrop dual-tone tank with rubber knee pads, traditional bench seat, twin pea-shooter exhaust style, and relaxed upright heritage ergonomics.
It delivers a tested real-world fuel economy of 28 to 33 km/l with a GPS top speed of 145 km/h.
Standard equipment includes Bosch dual-channel ABS, switchable Traction Control (TTC), torque-assist slipper clutch, ride-by-wire throttle, all-LED lighting with DRL, and an analogue speedometer with integrated LCD multi-info display.
The Bonneville 400 has a comfortable seat height of 790 mm (31.1 inches) and a wet kerb weight of 172 kg.