Triumph has previewed the Street Triple 798, a new sports naked that brings a Moto2-inspired engine, a revised frame and an altered riding position to the Street Triple formula. The company says the new engine will deliver greater performance than the outgoing 765 unit, while the first images point to a substantial visual and chassis rethink rather than a routine update.

The full technical presentation is scheduled for November 17. The motorcycle will also be shown at Motorcycle Live, where visitors will be able to see the new model in person. Until then, Triumph has confirmed the broad direction of the project, but not the complete specification or performance figures.

A more compact and purposeful design

The Street Triple 798 has a noticeably more compact-looking profile than the outgoing motorcycle. Its rear section appears higher and more tightly packaged, while the new swingarm has a visibly heavier, more performance-focused shape. The pillion seat also looks taller, an impression that suggests a stronger bias towards solo riding, although Triumph has not presented that visual change as a confirmed technical claim.

The exhaust is integrated neatly into the lower part of the motorcycle, creating a tidy belly-exit arrangement and leaving less visual clutter around the rear. The lighting remains recognisably linked to the Street Triple’s twin-headlamp identity, but the new units are more angular and contemporary rather than reproducing the full lamps of earlier versions. Deep blue paint and yellow highlights add a particularly bold contrast to the design.

The new shape retains enough of the established Street Triple language to remain identifiable, but Triumph has clearly pushed the stance in a more aggressive direction. The squat-looking rear, pronounced swingarm and revised proportions make the 798 appear more focused before its riding behaviour or complete geometry figures have been disclosed.

The 798 engine is the key change

The engine is the most important part of the update. Triumph describes it as Moto2-inspired and positions it above the 765 in performance terms. The increase in capacity is expected to affect more than peak output: the central question for this road-focused naked will be whether it brings stronger low- and mid-range response while preserving the accessible character associated with the Street Triple.

That balance is already a major theme in the early reactions to the motorcycle. Emma Franklin said the new design looks aggressive, modern and fresh, while also questioning whether some of the unmistakably British identity of the 2007 original has been lost. Her more important concern is what the larger engine, heavier-looking swingarm and revised frame will do to the everyday roadster character of the bike.

Chris Newbigging described the outgoing 765 as stable and somewhat restrained in its delivery, and said he would like the extra capacity to produce more immediate response rather than a more demanding road bike. His ideal is a Street Triple with the playful feel of the original 2007 machine, but with 140bhp and modern equipment; that is an expressed wish, not a confirmed specification for the 798.

Sharper handling, without losing the roadster brief

The Street Triple family has earned a following internationally and has been successful in both short-circuit and road racing. The platform is also being used as the basis for the next generation of Next-Gen Supersport race bikes. That wider role helps explain the Moto2 reference and the interest in the new frame, swingarm and riding position, but it also creates a clear challenge: more circuit ability should not make the road version difficult or tiring to use.

Saffron Wilson pointed to the model’s previous success in the 2024 Best Performance Naked award and wants to see whether the increase in power can be controlled by the proven handling package. She also highlighted the yellow detailing and deep blue finish, while noting that the new headlight shapes will take some getting used to for riders who prefer the classic full-lamp appearance.

Adam Oldfield sees the new profile and rear-end geometry as evidence of a more purposeful motorcycle. The taller-looking pillion seat and compressed rear section suggest a possible move towards greater agility, although the actual effect on turn-in and stability will only be clear once Triumph releases the chassis data and the bike is ridden. He also wants to know how the extra capacity changes the performance of the 765 engine’s successor.

Other early observations focus on the same tension between aggression and usability. Simon Brown believes the new headlights move the design forward without severing its connection with the earlier Street Triple and its original bug-eyed appearance. He also considers the Moto2 link central to the engine change, provided the new motorcycle remains easy and enjoyable to ride. Ben Clarke expects the compact-looking rear to make the bike feel even more agile, but hopes the additional capacity brings stronger low-speed drive and less effort at motorway speeds rather than simply a higher top-end emphasis.

Tom Willard highlights the GP-influenced swingarm, integrated lower exhaust and recognisable Triumph lighting as the details that give the 798 its strongest visual identity. His preference is for a future RS version with a more forceful mid-range and a more unruly road character, building on the racetrack performance already associated with the previous RS.

Triumph’s November 17 presentation should establish how much of that sharper appearance is backed by measurable mechanical change. For now, the Street Triple 798 is confirmed as a larger-capacity, Moto2-inspired evolution with a new frame, revised riding position and a visibly more compact design. Its success will depend on whether those changes add urgency without sacrificing the direct, usable roadster character that made the 765 and its predecessors so widely appealing.