FIRST LOOK — WHY THIS MATTERS
The Thruxton name has always meant race-bred style and a rowdy attitude in a tidy package. Triumph has taken that badge and built a modern, single-cylinder Thruxton for riders who want cafe-racer stance without the weight and complexity of larger classics.
KEY NUMBERS YOU NEED
Triumph's published spec sheet leaves little to guesswork. The Thruxton 400 carries a 398 cc liquid‑cooled single with a peak output of 41.4 HP @ 9,000 rpm and peak torque of 37.5 Nm (27.6 lb‑ft) @ 7,500 rpm. Wet weight is listed at 388 lb (≈176 kg), fuel capacity is 3.4 US gal, and seat height sits at 31.3 in (795 mm).
DESIGN AND PRESENCE
At a glance the Thruxton 400 reads as a true cafe racer: low clip-on bars, a sculpted teardrop tank, and a tight tail with a single-seat cowl. It’s compact but purposeful — the powder-coated engine casings, bright‑machined fin detail and slim LED lighting give a premium feel that photos don’t fully convey.
ENGINE, CHARACTER AND USABLE POWER
The TR‑series single revs willingly. Peak power and torque come high in the rev range, so the bike rewards a spirited, high‑rpm approach rather than lazy low‑gear lugging. That character makes the Thruxton feel alive on twisty roads.
Practical note from the saddle: expect to use the gearbox more than on larger twins. The clutch is a slip‑and‑assist type for lighter feel at the lever, and driveline behavior is smooth through the six‑speed transmission.
CHASSIS, SUSPENSION & BRAKES
Triumph specifies a hybrid spine/perimeter tubular steel frame with a cast‑aluminium swingarm. Up front there are 43 mm upside‑down Big Piston forks with 135 mm travel and a rear gas monoshock with external reservoir and preload adjustment giving 130 mm travel.
Braking comes from a single 300 mm front disc with a radially mounted four‑piston caliper and a 230 mm rear disc with a single‑piston floating caliper. Bosch dual‑channel ABS is standard. On a fast back road the front caliper bites with progressive feel — more than enough for the machine’s weight and intent.
TYRES, HANDLING AND FEEDBACK
Factory rubber is Pirelli Diablo Rosso IV with a 110/70 R17 front and 150/60 R17 rear. The combination and the lightish wet weight make the Thruxton flickable. The steering geometry — a 24.5° rake and a 54.17 in (1,376 mm) wheelbase — gives a balance between stability and agility. In real riding this translates to confidence when tipping into corners and immediate response when changing direction.
ON‑ROAD IMPRESSIONS — STREET & A LITTLE SPORT
Ride it through town and it’s composed: narrow enough to thread traffic, light clutch and predictable brakes. Take it on rural B‑roads and the motor’s higher rev appetite forces a sporty rhythm — short, quick shifts and a throttle hand that likes to stay busy. It’s not a long‑haul freeway cruiser, but it will hold highway speeds comfortably for occasional runs.
SPEC HIGHLIGHTS
- Engine: 398 cc, liquid‑cooled single, DOHC
- Max power: 41.4 HP @ 9,000 rpm
- Max torque: 37.5 Nm @ 7,500 rpm
- Transmission: 6‑speed, slip & assist clutch
- Front brake: 300 mm disc, 4‑piston radial caliper, ABS
- Rear brake: 230 mm disc, single‑piston, ABS
- Wet weight: 388 lb (≈176 kg)
- Seat height: 31.3 in (795 mm)
- Fuel capacity: 3.4 US gal
- Price: From $6,295 (factory U.S. spec listing)
OWNERSHIP, MAINTENANCE AND REALITY
Triumph quotes a 10,000‑mile service interval and backs the bike with a two‑year unlimited‑mileage warranty. That’s useful — fewer dealer trips and a lower cost of ownership than some high‑maintenance sport machines. Parts and dealer support will vary by market; check local Triumph availability for accessories and service pricing.
Practical riding tips
If you buy one: fit with an adjustable rearset or moveable footpegs if you plan track days — the bike is capable and will reward more aggressive foot position. Keep the gearbox lively; the engine wants rpm. Use the front brake progressively in the first half of a stop to maintain stability, then clamp harder as the weight transfers. Finally, respect the throttle at corner exits — the single delivers punch near the redline.
ACCESSORIES AND CUSTOM OPTIONS
Triumph offers trim options and an accessories catalogue that suits both cosmetic and performance needs: quilted seats, slip‑on silencers, bar‑end mirrors, and small luggage solutions. The Thruxton’s compact silhouette also makes it a popular base for tasteful custom builds.
WHO THIS IS FOR
The Thruxton 400 is aimed at riders who prize style and an engaging ride over outright long‑distance comfort or top‑end speed. It’s ideal for city riders who hit country roads on weekends and riders stepping up from 300–500 cc bikes but wanting classic Thruxton look and strong specification.
FINAL THOUGHTS
Triumph has done a clever job shrinking cafe‑racer DNA into a modern single. The Thruxton 400 is handsome, light enough to enjoy every corner, and equipped with sensible electronics and hardware for real roads. It won’t replace a larger Thruxton RS for raw speed, but it delivers authentic style and character with a lively, high‑revving personality that’s easy to live with day to day.
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