⭐ Motorhome Monkey Rating

★★★★☆ 8/10

Recommended

A stylish and confidence-inspiring lightweight roadster that combines premium build quality with enjoyable everyday performance.

📖 New to Motorhome Monkey reviews? Learn how we test and rate products in our How We Review at Motorhome Monkey guide.

Overview

The launch of the Triumph Speed 400 marked an important moment for the British manufacturer. While Triumph has built its reputation on larger-capacity motorcycles such as the Bonneville, Street Triple and Tiger ranges, the Speed 400 opens the door to an entirely new audience.

Developed in partnership with Bajaj Auto, the Speed 400 has been engineered to deliver Triumph’s renowned build quality and riding experience in a more accessible package. Rather than chasing outright performance, Triumph has concentrated on creating a motorcycle that’s enjoyable, approachable and practical enough to ride every day.

For many riders, it’s exactly the sort of motorcycle that reminds you why you fell in love with riding in the first place.

Styling & Build Quality

At first glance, there’s no mistaking the Speed 400 for anything other than a Triumph.

The sculpted fuel tank, classic round LED headlamp, aluminium detailing and clean lines create a motorcycle that looks far more expensive than its asking price suggests.

Attention to detail is particularly impressive. Paint quality, switchgear and the overall finish are among the best in the lightweight motorcycle class, helping the Speed 400 stand out against many of its competitors.

It successfully blends classic styling with modern engineering without feeling overly retro.

Engine & Performance

Power comes from a liquid-cooled 398cc single-cylinder engine producing around 40 horsepower.

The engine feels lively without being intimidating, making it ideal for riders progressing from a 125cc motorcycle or returning to riding after several years away.

Acceleration is brisk around town, while the six-speed gearbox is smooth and precise. The ride-by-wire throttle delivers predictable power, making slow-speed manoeuvres easy and confidence inspiring.

Although motorway cruising is perfectly achievable, the Speed 400 is happiest on A-roads and twisting country lanes where its lightweight chassis really comes alive.

Comfort

The riding position is upright and relaxed, striking an excellent balance between sporty styling and everyday comfort.

The seat provides good support, while the handlebars naturally fall to hand, reducing fatigue during longer rides.

As with most naked motorcycles, wind protection is minimal, but that’s an expected compromise rather than a criticism.

Overall comfort is impressive for a motorcycle in this class.

Handling

Handling is one of the Speed 400’s strongest attributes.

Its low weight and balanced chassis inspire confidence almost immediately, making it equally enjoyable for newer riders and experienced motorcyclists.

Quality suspension absorbs poor road surfaces well, while predictable steering encourages smooth, flowing riding through bends.

Rather than demanding to be ridden aggressively, the Speed 400 rewards precision and finesse.

Technology & Equipment

Triumph has equipped the Speed 400 with an impressive range of modern features.

These include:

• Full LED lighting
• Dual-channel ABS
• Switchable traction control
• Ride-by-wire throttle
• USB charging socket
• Semi-digital instrument display

The equipment list strikes an excellent balance between modern convenience and mechanical simplicity.

Running Costs & Practicality

One of the Speed 400’s biggest strengths is its affordability.

Fuel economy is excellent, servicing intervals are sensible and insurance costs are likely to appeal to both newer and experienced riders.

Consumables such as tyres, brake pads and chains are also relatively inexpensive compared with larger motorcycles.

For riders seeking low-cost ownership without sacrificing quality, the Speed 400 is an attractive proposition.

👍 What We Liked

• Premium build quality that’s exceptional for the price.
• Beautiful modern-classic styling.
• Light, confidence-inspiring handling.
• Comfortable riding position for everyday use.
• Excellent value for money.
• Well-equipped with modern safety technology.

👎 What Could Be Better

• Limited wind protection on faster roads.
• Single-cylinder engine becomes busier during sustained motorway riding.
• Pillion seat is best suited to shorter journeys.
• Riders planning extensive touring with luggage may prefer a larger-capacity motorcycle.

👤 Who Is It Best For?

The Triumph Speed 400 is particularly well suited to:

• Riders upgrading from a 125cc motorcycle.
• A2 licence holders.
• Returning motorcyclists.
• Commuters wanting an enjoyable everyday bike.
• Experienced riders looking for a lightweight weekend motorcycle.

It may be less suitable for:

• Riders regularly covering long motorway distances.
• Frequent two-up touring.
• Those seeking serious off-road capability or high-performance sports riding.

⭐ Motorhome Monkey Verdict

The Triumph Speed 400 demonstrates that an enjoyable motorcycle doesn’t need a huge engine or an intimidating price tag.

Triumph has produced a motorcycle that feels premium in almost every respect, with impressive build quality, engaging handling and a level of refinement that’s difficult to match in this sector. While the single-cylinder engine and naked design naturally impose some limitations for long-distance motorway touring, those compromises are entirely consistent with the bike’s intended purpose.

For riders looking for a stylish, economical and confidence-inspiring motorcycle that delivers genuine everyday enjoyment, the Speed 400 is an easy recommendation. It successfully captures the spirit of the Triumph brand in a lightweight package that’s likely to appeal to a broad range of riders.

Editorial Note

Motorhome Monkey reviews are based on published specifications, manufacturer information, independent industry research and owner feedback. Where we have direct experience of a product, that experience informs our review. Our aim is to provide balanced, objective assessments that help readers choose the product best suited to their individual needs.