Triumph has provided the first substantial look at the Street Triple 798, a new model planned for 2027. This is more than a styling refresh: the frame architecture, tail section, swingarm and exhaust have all been revised, while the main mechanical story is a new inline-Triple. The 798cc displacement remains an expectation rather than a confirmed specification. Full details are scheduled for November 17.

The images released so far show only the Street Triple 798 RS, and all of them present the motorcycle from the right-hand side. They nevertheless reveal the direction of the new generation. Familiar Street Triple cues remain, but the proportions and several structural components have been reworked.

A Moto2-linked engine

The Street Triple 798 is expected to use an inline-Triple with the same configuration and anticipated displacement as the engine in the Trident 800. Triumph describes it as a new engine developed for the Moto2 World Championship, however. The production unit will not be identical to the race engine, with differences expected between the two applications.

Triumph says the new Moto2 engine produces 6% more power than the current engine. Its development includes a new cylinder head, a fully redesigned low-inertia valvetrain, higher-flow ports and a new combustion chamber. Together, these changes are intended to support a higher compression ratio and stronger torque across the rev range.

Triumph also says the new race engine is 4.4 pounds heavier than the previous race unit. That statement concerns the Moto2 engine and does not establish a corresponding weight increase for the production Street Triple.

Revised structure and a shorter tail

The frame retains the mounting point behind the cylinder head, but adds another section that rises towards the fuel tank before returning behind the steering head. The rear subframe appears to meet the main frame at the top of this arch and at the familiar point on top of the swingarm pivot plates.

The seat appears to sit at approximately the same height as on the current Street Triple, while the tail is noticeably shorter and more steeply upswept. At the front, the headlights keep a similar outline, but the LED position lights now wrap around more of the headlight rather than following the current model’s distinctive eyebrow treatment.

The fork resembles the current Street Triple’s Showa Big Piston Fork, although the triple clamps appear lower in relation to the frame. The front calipers resemble the existing model’s Brembo Stylema four-piston radial monobloc units. At the rear, the swingarm is an entirely new design that abandons the current motorcycle’s boomerang shape. The rear monoshock is positioned closer to the wheel, while its visible position does not allow a firm comparison of the complete suspension layout with the existing model.

The exhaust is new as well, with revised header pipes and a substantially shorter silencer located below the rearset footpegs.

RS first, with the range still to come

Only the Street Triple 798 RS has been shown so far. RX and Moto2 versions are expected, while the return of an R remains uncertain. Triumph dropped the Street Triple R when it introduced the Trident 800, so any new R would need a clear distinction from the other versions in both price and performance to justify its place in the range. The remaining technical details and final model line-up are due on November 17.