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Triumph Unveils 2027 Street Triple 798 Ahead of Full Reveal

By Dennis Chung

Triumph has kicked off its 2027 model year with the launch of the Bonneville T40 and Bonneville T40 Black, and has also given a preview of the new Street Triple 798. The full details are scheduled for release on November 17, but the company has shared several right‑side images of the upcoming bike.

The new Street Triple shows significant changes to the frame while keeping some familiar elements. The twin‑spar frame now includes a second segment that arches toward the fuel tank before rejoining the main frame behind the steering head. The rear subframe attaches at the top of this arch and at the usual spot on the side pivot plates. The seat height remains similar to the current model, but the tail is shorter and more upright.

Front styling retains the headlight shape of the current version, but the LED position lights now wrap around the headlight instead of the sharp “angry eyebrows” seen on the present model. The Showa Big Piston Fork appears largely unchanged, though the triple clamps sit lower relative to the frame. Front brakes are still Brembo Stylema four‑piston radial monoblock calipers. The swingarm has been redesigned, dropping the boomerang shape of the current model, and the rear monoshock is positioned closer to the rear wheel.

The 2027 Street Triple will be powered by a new inline‑triple engine, presumably 798 cc. This engine, developed for the Moto2 World Championship, is expected to deliver 6 % more power than the current Street Triple engine. It features a new cylinder head with a redesigned low‑inertia valvetrain, higher flow ports, and a new combustion chamber to achieve a higher compression ratio and more torque across the rev range. The Moto2 engine weighs 4.4 lb heavier than the previous race engine; it is unclear if the Street Triple version will share this weight.

The exhaust system is entirely new, with new header pipes and a shorter silencer positioned below the rearset footpegs. Images released so far show only the RS version of the Street Triple 798. A RX and a Moto2 version are expected, though an R model is uncertain. Triumph discontinued the Street Triple R when the Trident 800 debuted, and a new R model would need to justify itself with distinct pricing and performance.

Full specifications for the 2027 Street Triple 798 will be announced on November 17.