The 400cc roadster segment in India has exploded over the last two years. What was once a niche dominated by the KTM Duke 390 is now a crowded battlefield with three compelling new contenders:
- Triumph Speed 400 (₹2.40 lakh) – British heritage, modern engineering
- Harley-Davidson X440 (₹2.39 lakh) – American cruiser DNA in a roadster body
- Royal Enfield Guerrilla 450 (₹2.49 lakh) – The newest entrant, based on the Himalayan 450 platform
Each bike takes a different approach to the 400cc formula. The Speed 400 is a neo-retro roadster. The X440 is a cruiser-roadster hybrid. The Guerrilla 450 is a flat-tracker-inspired streetfighter.
Which one should you buy? This comprehensive comparison covers engine character, handling, comfort, features, pricing, and long-term ownership.
Engine & Performance – Three Personalities, One Displacement Class
All three bikes have single-cylinder engines between 400cc and 450cc, but their power delivery could not be more different.
| Parameter | Triumph Speed 400 | Harley X440 | RE Guerrilla 450 |
|---|---|---|---|
| Displacement | 398 cc | 440 cc | 452 cc |
| Cooling | Liquid | Liquid + oil | Liquid |
| Power | 40 bhp @ 8,000 rpm | 27 bhp @ 6,000 rpm | 40 bhp @ 8,000 rpm |
| Torque | 37.5 Nm @ 6,500 rpm | 38 Nm @ 4,000 rpm | 40 Nm @ 5,500 rpm |
| Compression ratio | 12:1 | 9.5:1 | 11.5:1 |
| Transmission | 6-speed (slip-assist) | 6-speed | 6-speed (slip-assist) |
| 0-100 kmph | 6.6 seconds | 8.2 seconds | 6.5 seconds |
| Top speed | 160 kmph | 145 kmph | 165 kmph |
| Fuel efficiency (real-world) | 27 kmpl | 30 kmpl | 28 kmpl |
Triumph Speed 400 – The Rev-Happy All-Rounder
The Speed 400’s engine is a detuned version of the 660cc triple in the Trident. It loves to rev. Peak power arrives at 8,000 rpm – higher than the others. The bike feels alive above 5,000 rpm, with a sweet exhaust note that builds to a satisfying howl.
Best for: Riders who enjoy working through the gearbox and keeping the engine on the boil. Highway overtakes are effortless.
Worst for: Laid-back cruising. The Speed 400 wants to go fast.
Harley-Davidson X440 – The Torque Monster
The X440’s engine is tuned like a traditional Harley – massive low-end torque, no need to rev. Peak torque arrives at just 4,000 rpm. You can short-shift at 3,500 rpm and still make brisk progress. The engine feels lazy and unstressed – exactly what cruiser riders want.
Best for: Relaxed city riding. The X440 pulls cleanly from 2,000 rpm in 3rd gear – no downshifting required.
Worst for: Aggressive cornering or track days. The engine signs off early, and the 8-second 0-100 time is the slowest here.
Royal Enfield Guerrilla 450 – The Sherpa Grows Legs
The Guerrilla uses the same 452cc Sherpa engine as the Himalayan 450 but retuned for street riding. The compression ratio is slightly lower (11.5:1 vs 12:1), and the camshaft profile is milder. The result: torque arrives 500 rpm earlier than the Himalayan, making the Guerrilla more responsive in city traffic.
Best for: Riders who want a middle ground – more torque than the Triumph, more revs than the Harley.
Worst for: Short riders (the 825 mm seat height is tallest here) or those who dislike vibration (the Sherpa engine has a 5,000 rpm buzz).
Winner: Triumph for performance, Harley for low-down torque, RE for balance.
Chassis & Handling – How They Corner
| Parameter | Triumph Speed 400 | Harley X440 | RE Guerrilla 450 |
|---|---|---|---|
| Frame | Tubular steel perimeter | Trellis frame | Steel twin-spar |
| Front suspension | 43mm USD fork (Big Piston) | 43mm telescopic | 43mm USD fork |
| Rear suspension | Monoshock (preload adjustable) | Dual shocks | Monoshock (preload adjustable) |
| Front tyre | 110/70-17 | 100/90-18 | 120/70-17 |
| Rear tyre | 150/60-17 | 140/70-17 | 150/60-17 |
| Ground clearance | 160 mm | 170 mm | 165 mm |
| Kerb weight | 176 kg | 198 kg | 185 kg |
Triumph Speed 400 – The Cornering King
The Speed 400 is the lightest (176 kg) and has the sportiest chassis. The 43mm Big Piston USD fork (borrowed from the Daytona 675) provides exceptional front-end feel. The bike tips into corners eagerly and holds its line with no mid-corner corrections needed.
The Michelin Road 5 tyres (standard) grip brilliantly in both dry and wet conditions. The Speed 400 is genuinely fun on a twisty road – something you cannot say about most sub-400cc bikes.
Verdict: Best handling of the three by a significant margin.
Harley-Davidson X440 – The Straight-Line Cruiser
The X440 is heavy (198 kg – 22 kg more than the Triumph) and has an 18-inch front wheel (the others have 17-inch). This combination makes the bike slower to turn and less willing to change direction.
However, on a straight highway, the X440 feels planted and stable. The longer wheelbase and relaxed steering geometry mean no twitchiness at speed.
Verdict: Not a cornering bike. Buy this for relaxed highway cruising, not mountain roads.
Royal Enfield Guerrilla 450 – The Flat-Tracker
The Guerrilla shares its chassis with the Himalayan 450 but with a 17-inch front wheel (instead of 21-inch). The result is a bike that feels halfway between the Triumph and the Harley.
The 120-section front tyre provides excellent grip, and the bike changes direction decently. However, the 825 mm seat height (tallest here) raises the centre of gravity, making low-speed manoeuvres (U-turns, parking) require more care.
Verdict: Good handling, but the tall seat deters shorter riders.
Winner: Triumph – by a wide margin.
Comfort & Ergonomics – Which Is Best for Long Rides?
| Parameter | Triumph Speed 400 | Harley X440 | RE Guerrilla 450 |
|---|---|---|---|
| Seat height | 790 mm | 780 mm | 825 mm |
| Seat width | Medium | Wide | Narrow |
| Handlebar position | Slightly forward | Pulled back | Neutral |
| Footpeg position | Mid-set (sporty) | Forward-set (cruiser) | Mid-set |
| Pillion seat | Small, hard | Wide, comfortable | Small, mediocre |
Triumph Speed 400 – Sporty Committed Position
The Speed 400 puts you in a slightly forward-leaning posture – not as aggressive as a sportbike, but definitely not upright. The seat is firm and narrow to aid cornering clearance. After 2 hours, your wrists may tire.
Best for: Riders under 5’10” and those who prioritise control over comfort.
Harley-Davidson X440 – Laid-Back Cruiser Position
The X440 has the most relaxed ergonomics. The seat is wide and plush, the handlebars are pulled back towards you, and the footpegs are forward-set (though not as far forward as a full cruiser). The bike feels like a lazy armchair on wheels.
Best for: Tall riders (6 feet+) and those with back or wrist issues. The upright position is kind to your body.
Royal Enfield Guerrilla 450 – Tall-Friendly
The Guerrilla’s 825 mm seat height is a problem for riders under 5’7″. If you are 5’10” or taller, the bike feels roomy and natural. The neutral handlebar position (not too forward, not too pulled back) is comfortable for all-day riding.
Best for: Tall riders (5’10″+) who want an upright, commanding view of traffic.
Winner: Harley for pure comfort, Triumph for sporty ergonomics, RE for tall riders.
Features & Technology
| Feature | Triumph Speed 400 | Harley X440 | RE Guerrilla 450 |
|---|---|---|---|
| Instrument cluster | Analog + small digital | Circular digital (LCD) | Circular TFT (colour) |
| Bluetooth connectivity | No | No | Yes (RE app) |
| Navigation | No | No | Yes (turn-by-turn on TFT) |
| Riding modes | No | No | Yes (Eco, Performance) |
| Traction control | No | No | No (except top variant) |
| ABS | Dual-channel | Dual-channel | Dual-channel |
| LED lighting | All LED | All LED | All LED |
| Smart key (proximity) | No | No | Yes (top variant) |
| USB charging port | No | Yes (under seat) | Yes (under seat) |
| Service reminder | Basic | Basic | Yes (TFT shows countdown) |
The Royal Enfield Guerrilla wins on features – the TFT screen with turn-by-turn navigation is genuinely useful. The Triumph feels basic (no Bluetooth, no USB port). The Harley sits in the middle.
Winner: Royal Enfield
Pricing & Variants (Ex-showroom, April 2026)
| Model | Price |
|---|---|
| Triumph Speed 400 (single variant) | ₹2,39,923 (rounded to ₹2.40 lakh) |
| Harley-Davidson X440 (Denim) | ₹2,39,000 |
| Harley-Davidson X440 (Premium) | ₹2,69,000 |
| RE Guerrilla 450 (base) | ₹2,39,000 |
| RE Guerrilla 450 (mid) | ₹2,59,000 |
| RE Guerrilla 450 (top) | ₹2,79,000 |
The pricing is incredibly tight at the entry level – all three start within ₹1,000 of each other.
The best value is the base Guerrilla 450 at ₹2.39 lakh – you get the TFT screen, 40 bhp, and slip-assist clutch for the same price as the Speed 400 (which lacks those features).
Final Recommendation
| If your budget is strictly ₹2.4 lakh | Buy the Royal Enfield Guerrilla 450 base. You get the most features for the money. |
|---|---|
| If you can stretch to ₹2.5-2.6 lakh | Test ride the Triumph Speed 400 and RE Guerrilla 450 back-to-back. Buy the one whose engine character you prefer. |
| If you are a cruiser lover at heart | Buy the Harley-Davidson X440. It will not satisfy sporty riders, but it will delight laid-back riders. |
Our pick: The Royal Enfield Guerrilla 450 offers the best balance of performance, features, and price. The Triumph Speed 400 is the better handling bike, but the RE’s TFT screen and navigation are hard to ignore for daily use.