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Triumph has Tigers, Tridents, and Thruxtons. It has Scramblers, Street Triples, and Speed Triples.
But nothing is more synonymous with the British brand than its Bonneville family — a family that gained its newest member with the debut of the 2027 Bonneville T40.
The Bonneville way
This Bonnie doesn’t hail from one house alone. That’s because Triumph builds the T40 on its single-powered TR platform. The marque didn’t simply slap a teardrop fuel tank on the existing Speed 400 and call it a day, though. It took exhaustive measures to recreate the Bonneville aesthetic.
The front mudguard is strut-mounted. The exhaust is a peashooter. The wheels are laced. A round LED headlight may light the way, but the unit is housed in a period-correct bucket. There’s a bench seat and a looped grab handle. Whereas the other 400s wear inverted forks, the T40 opts for a traditional front end, fork boots and all. Triumph’s efforts aren’t solely superficial either.
Even the T40’s frame underwent substantial revisions. The bolt-on subframe found on the other 400s is out. In its stead is a one-piece frame that accommodates the dual shocks so emblematic of Bonnevilles. Not even the thumper at the heart of the T40 goes unchanged.
The engine maintains its 398 cc displacement, but a retune and a model-specific cylinder head drops the mill’s claimed output to 30.6 horsepower (at 7,000 rpm) and 26.55 foot-pounds (at 5000 rpm). That’s nearly 10 fewer ponies than its stablemates, but Triumph says the power profile delivers “a riding experience that remains true to the character of the Bonneville.”
Despite the retro roadster's classic cosmetics, it still packs today's tech into a budget-conscious package. The circular four-inch TFT display is but one example. There’s also lean-sensitive traction control and cornering ABS, as well as three pre-set ride modes (Road, Rain, and Eco) and two custom ride modes. Triumph goes as far as adding cruise control as standard.
The T40 is slated to roll into U.S. Triumph dealerships in late spring 2027, but the manufacturer won’t disclose the model’s MSRP until early 2027. It’s just one of the details Triumph is closely guarding.
The Hinckley firm didn’t limit its announcement to the T40 alone. It also teased the updated Tiger 900 and 1200 along with the refreshed Street Triple 798. As the new moniker suggests, the latest Street Triple will harness a larger engine — one that directly benefits from Triumph’s Moto2 developments. The brand will fully unveil the Tiger 1200 on October 27, the Street Triple 798 on November 17, and the Tiger 900 on December 15.
The Triumph badge might be most synonymous with the Bonneville line, but if its latest announcement is any indication, it's just as invested in its Tigers and Street Triple.
| 2027 Triumph Bonneville T40 | |
|---|---|
| Price (MSRP) | TBA |
| Engine | 398 cc, liquid-cooled, four-valve, single |
|
Transmission, final drive |
Six-speed, chain |
| Claimed horsepower | 30.6 @ 7,000 rpm |
| Claimed torque | 26.55 foot-pounds @ 5,000 rpm |
| Frame | Steel tubular, hybrid spine/perimeter, |
| Front suspension | 43 mm fork; 5.1 inches of travel |
| Rear suspension | Twin shocks, adjustable for spring preload; 5.1 inches of travel |
| Front brake | Dual-piston, 310 mm disc with ABS |
| Rear brake | Single-piston caliper, 255 mm disc with ABS |
| Rake, trail | 25.4 degrees, 3.95 inches |
| Wheelbase | 55.8 inches |
| Seat height | 31.1 inches |
| Fuel capacity | 3.8 gallons |
| Tires | 100/90-18 front, 150/70R17 rear |
| Claimed weight | 421 pounds |
| Available | Spring 2027 |
| Warranty | 24 months |
| More info | triumphmotorcycles.com |
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