Triumph Thruxton 400 Top Speed, Specs & Review
TL;DR
- Triumph’s claimed top speed for the Thruxton 400 is 161 km/h (about 100 mph); no independent US instrumented test has published a different figure yet.
- Triumph’s own 0-100 km/h figure is 6.7 seconds, which works out to roughly 6 seconds flat to 60 mph.
- The engine is a 398cc liquid-cooled single making 41.4 hp at 9,000 rpm and 27.7 lb-ft of torque at 7,500 rpm.
- US pricing starts at $6,295, and the bike landed at dealers in March 2026.
- It’s the sportiest of Triumph’s four 400cc models, with clip-ons, rear-set pegs, and a 795mm seat height.
What Top Speed Does the Thruxton 400 Actually Hit?
Triumph lists the Thruxton 400’s top speed at 161 km/h, which converts to about 100 mph (Triumph Motorcycles, 2026). That figure comes straight from the factory, not from a radar gun or GPS-logged run by an independent publication, so treat it as a manufacturer claim rather than a verified test result.
For context, that’s a real bump over the standard Speed 400, which Triumph tunes for more low-end grunt and less top-end reach.
The Thruxton gets there through a reworked cam, a higher-flowing intake, and a rear sprocket that’s two teeth smaller than the Speed 400’s, all in service of a taller overall gearing setup built for holding speed rather than snapping off the line.
In the real world, you’ll see the needle settle in around the mid-90s on a stock bike with a 180-pound rider in a tuck. Wind resistance off that half-fairing does some of the work, but a single-cylinder 398cc engine only has so much top end to give, and 100 mph is right about where physics says it should run out of room.
How Quick Is the Thruxton 400 From 0-60?
Triumph’s claimed 0-100 km/h time is 6.7 seconds. Converting that to the more familiar US measure, 0-60 mph lands in the neighborhood of 6 seconds flat, a touch quicker than the 0-100 km/h number since 60 mph is a hair under 97 km/h.
That’s a full second quicker to 100 km/h than Triumph’s own Speed 400, and it comes down to gearing and a raised redline rather than a power hike alone.
The Thruxton’s 41.4 hp peaks 1,000 rpm higher than the Speed 400’s output, and the retuned cam keeps the engine pulling harder through the midrange where most riders actually spend their time twisting the throttle.
No US magazine has published an independently timed 0-60 run as of this writing. If you’re cross-shopping against a Kawasaki Ninja 400 or Honda CB300R, treat both bikes’ published numbers the same way: manufacturer claims until proven otherwise on a track.
Thruxton 400 Full Specs
| Spec | Thruxton 400 |
|---|---|
| Engine | 398cc, liquid-cooled, DOHC single |
| Power | 41.4 hp @ 9,000 rpm |
| Torque | 27.7 lb-ft @ 7,500 rpm |
| Transmission | 6-speed, slip-and-assist clutch |
| Front suspension | 43mm inverted fork, non-adjustable |
| Rear suspension | Monoshock, preload-adjustable, 130mm travel |
| Front brake | 300mm disc, 4-piston ByBre radial caliper |
| Rear brake | 230mm disc, single-pot floating caliper |
| Tires | Pirelli Diablo Rosso IV |
| Seat height | 795mm (31.3 in) |
| Wheelbase | 1,376mm (54.2 in) |
| Wet weight | 388 lb |
| Starting price | $6,295 |
| Source: Triumph Motorcycles, 2026; RevZilla, 2026 |
What Makes the Thruxton 400 Different From the Speed 400?
The Thruxton 400 trades the Speed 400’s upright, naked-bike stance for clip-on bars and rear-set pegs, and that geometry shift is the real story here, more than the small power bump.
Compared to the Speed 400, the clip-ons sit 246mm lower and 40mm narrower, while the pegs move back 86mm and up 27mm (RevZilla, 2026). That’s a genuine café racer riding position, not a styling afterthought.
The engine internals also diverge from the Speed 400 for the first time in the TR-series lineup. Triumph gave the Thruxton (and its Tracker 400 sibling) a longer-duration intake cam, higher valve lift, and revised mapping, bumping output by about 5% and moving the redline up 1,000 rpm to 10,200 rpm. The Speed 400 and Scrambler 400 X don’t get this engine, at least for now.
Suspension changes follow the same logic. Both bikes share a 43mm inverted fork, but the Thruxton runs stiffer internal damping to match its sportier intent, and fork travel drops slightly to 135mm versus the Tracker 400’s 140mm.
Who Should Actually Buy the Thruxton 400?
This bike is built for riders who want café racer looks and a genuine sport-leaning riding position without stepping up to a 600cc-plus machine or a used liter bike with unknown service history.
The 795mm seat height and light clutch pull keep it accessible, but the forward lean and rear-set pegs will wear on you faster than the upright Speed 400 on a long commute.
It’s a strong fit for a new rider who’s outgrown a 300-class bike but isn’t ready for a full sportbike’s power delivery, and for anyone who wants a stylish, low-maintenance single that won’t punish a wallet at fill-up or at the dealer.
If you’re doing serious highway miles every week, the vibration through the pegs and mirrors past 6,000 rpm is worth a test ride before you commit; testers who rode the bike at launch called it noticeable on sustained runs.
Frequently Asked Questions
What is the top speed of the Triumph Thruxton 400?
Triumph’s claimed top speed is 161 km/h, or about 100 mph. This is a manufacturer figure; no independently verified US test has published a different number yet.
How fast is the Thruxton 400 from 0-60 mph?
Based on Triumph’s claimed 6.7-second 0-100 km/h time, 0-60 mph works out to roughly 6 seconds. No independent 0-60 test has been published for the US-spec bike as of this writing.
How much horsepower does the Thruxton 400 have?
It makes 41.4 hp at 9,000 rpm and 27.7 lb-ft of torque at 7,500 rpm from its 398cc single-cylinder engine.
What’s the difference between the Thruxton 400 and the Speed 400?
The Thruxton gets a sportier riding position with clip-on bars and rear-set pegs, a retuned engine with about 5% more power and a higher redline, and different gearing. The Speed 400 is upright and naked-styled with a mellower low-end-focused tune.
How much does the Triumph Thruxton 400 cost?
US pricing starts at $6,295 for the base color options, with the Premium trim running slightly higher depending on the dealer.
Is the Thruxton 400 good for a first bike?
It works for riders who’ve already got some seat time and want café racer styling, thanks to the manageable 795mm seat height, light clutch, and switchable traction control and ABS. A true first-time rider with zero experience may find the sportier ergonomics and narrow powerband less forgiving than the upright Speed 400.
