Two legendary British names, both reborn and manufactured in India, now go head-to-head for domination of the mid-capacity performance motorcycle market. The Royal Enfield Guerrilla 450 and the Triumph Speed 400 share more than a common heritage — both make 40 horsepower, both are liquid-cooled single-cylinders, and both are priced under ₹2.4 lakh.
But that’s where the similarities end. These two machines have very different philosophies, personalities, and target audiences. One channels the raw, engaging attitude that Royal Enfield is known for; the other blends refinement and precision in true Triumph fashion. After riding both extensively, here’s a detailed comparison to help you decide which one deserves a spot in your garage.
Design and Presence
Royal Enfield Guerrilla 450 – Bold and Muscular
The Guerrilla 450 immediately stands out with its distinct styling. It borrows some visual DNA from the Himalayan 450 but reinterprets it for street performance. Fat tyres, chunky rear panels, and a wide, muscular tank give it serious presence. Despite its quirky design language, the Guerrilla’s proportions work well, and it feels substantial on the road.
Its exposed rear tyre and compact tail section add to its sporty stance, although this design choice does lead to one small issue — mud splashes during wet rides. At 185 kg, the Guerrilla isn’t feather-light, but its 780 mm seat height is among the lowest in its segment, making it approachable for a wide range of riders.
Triumph Speed 400 – Elegant and Understated
The Triumph Speed 400, in contrast, takes a more refined and proportionate approach. The design is clean, compact, and beautifully detailed. The paint finish, metal quality, and overall attention to fit and finish are class-leading — arguably the best on any Indian-made motorcycle today.
However, its slim silhouette means it doesn’t command the same visual presence as the Guerrilla. It looks balanced rather than aggressive — a design that appeals to purists who value understated elegance over flamboyance.
Verdict (Design)
If you prefer subtle sophistication, the Speed 400 wins hands down. But if street presence and individuality matter more, the Guerrilla 450 has that extra edge.
Ergonomics and Comfort
Riding Position
Both motorcycles offer upright, comfortable ergonomics, but with subtle differences. The Guerrilla 450’s wide and high handlebar makes the rider feel more engaged, encouraging a sporty riding posture. Its slightly rear-set footpegs add a dash of aggression, while the soft-yet-firm seat provides decent comfort for short to medium rides.
The Speed 400 has a slightly lower handlebar and more neutral ergonomics. Its seat is plusher, making it better for long-distance cruising. Taller riders will appreciate the Speed’s proportions, while shorter riders might find the Guerrilla’s lower saddle easier to manage.
Suspension Setup
The two bikes take opposite approaches here.
- Guerrilla 450: Firm and controlled suspension. It feels taut but never punishing. Over rough roads, it absorbs bumps cleanly without wallowing.
- Speed 400: Softer setup tuned for comfort. It glides over city potholes but can get a bit bouncy on uneven highways or twisty terrain.
Verdict (Comfort)
The Speed 400 is the better touring companion, while the Guerrilla 450 offers a sportier and more connected feel on winding roads.
Engine and Performance
| Specification | Royal Enfield Guerrilla 450 | Triumph Speed 400 |
| Engine | 452 cc, single-cylinder, liquid-cooled | 398 cc, single-cylinder, liquid-cooled |
| Power | 40 hp @ 8,000 rpm | 40 hp @ 8,000 rpm |
| Torque | 40 Nm @ 5,500 rpm | 37.5 Nm @ 6,500 rpm |
| Gearbox | 6-speed | 6-speed |
| Weight | 185 kg | 176 kg |
| Fuel Tank | 11 litres | 13 litres |
Character and Ride Feel
Even though both engines produce the same peak power, they deliver it very differently.
The Triumph’s engine feels smoother, better balanced, and more refined. Its throttle response is crisp, clutch operation is light, and it pulls cleanly even at low speeds. You can comfortably cruise at 90 km/h in fifth gear without downshifting — perfect for city commuting or long highway stretches.
The Guerrilla 450’s Sherpa engine, meanwhile, feels more spirited and emotional. It has stronger mid-range punch and a throaty intake note that adds character. It’s more engaging and a bit rawer — the kind of engine that makes you grin every time you open the throttle. However, vibrations start creeping in above 100 km/h, something the Triumph manages far better.
Performance and Efficiency
In real-world testing, both are neck-and-neck:
- 0-100 km/h: roughly 6.5 seconds (Guerrilla slightly quicker off the line).
- Top speed: around 155 km/h for both.
- City mileage: 26–28 km/l (Triumph) vs 24–26 km/l (RE).
- Highway mileage: 32–34 km/l (Triumph) vs 30–32 km/l (RE).
Verdict (Engine)
If refinement, tractability, and range are priorities, the Speed 400 wins. But if you value character and thrill, the Guerrilla 450 feels more alive.
Ride and Handling
Agility and Control
This is where the Guerrilla 450 surprises you. Despite being heavier, it feels sharper and more playful in corners. The chassis setup encourages enthusiastic cornering, and the front end communicates beautifully with the rider. It’s the kind of motorcycle that seems eager to lean into every curve.
The Speed 400, while competent, feels more composed than exciting. It maintains great stability and balance but doesn’t communicate as vividly as the Guerrilla does.
Braking
Both bikes get dual-channel ABS, but the Guerrilla’s brakes offer better feedback and stronger bite. The Triumph’s braking system is progressive and reassuring, but slightly softer at the lever.
Verdict (Handling)
The Guerrilla 450 wins for rider engagement and dynamic fun, while the Speed 400 prioritizes stability and smoothness.
Features and Equipment
| Feature | Guerrilla 450 | Speed 400 |
| Display | Digital TFT (optional) / LCD | Analogue-digital combo |
| Riding Modes | Eco, Performance | None |
| Forks | Telescopic | USD (Upside-down) |
| Traction Control | No | Yes |
| Cruise Control | No | No |
| Centre Stand | Yes | No |
| Charging Port | USB Type-A | USB Type-C |
| Immobiliser | No | Yes |
The Speed 400 brings a more premium feature list — traction control, USD forks, and an engine immobiliser that adds peace of mind.
The Guerrilla 450, on the other hand, focuses on practicality and customisation. It comes with a centre stand (missing on the Triumph), switchable riding modes, and compatibility with the Royal Enfield Tripper TFT display.
Verdict (Features)
For gadget lovers and tech-oriented riders, the Speed 400 is more appealing. For practical touring enthusiasts who like modular accessories, the Guerrilla 450 offers more value.
Pricing and Value
| Bike | Ex-Showroom (Delhi) | Key Strength |
| Royal Enfield Guerrilla 450 | ₹2.39 lakh | Better brakes, design presence, characterful motor |
| Triumph Speed 400 | ₹2.33 lakh | Refinement, premium build, modern tech |
Both offer tremendous value for money. The Speed 400 is the more polished product overall, but the Guerrilla 450’s raw appeal, strong brand image, and unique riding personality give it equal justification for its price tag.
Verdict: Which One Should You Buy?
It’s hard to pick a clear-cut winner — because they cater to two different kinds of riders.
- Buy the Triumph Speed 400 if you value refinement, daily usability, smooth performance, and premium finish. It’s ideal for riders upgrading from 200–250 cc bikes or those who prefer a balanced, sophisticated feel.
- Buy the Royal Enfield Guerrilla 450 if you want character, emotion, and engagement. It’s the more expressive motorcycle, better for riders who like a bit of edge in their everyday rides and enjoy the tactile connection between throttle, road, and heart.
Final Word:
The Speed 400 is the smart choice.
The Guerrilla 450 is the soulful one.
And that’s what makes this new British rivalry so exciting — there’s truly a bike for every kind of rider.
