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.
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.