[2][3] In 2007, a number of spy photos and speculative design drawings were reported in the motorcycle press,[4] with one magazine capturing a road test of the completed Street Triple.

[6] A report on the showcasing of the finished bike to dealers was published on 6 March 2007, along with a spy video of a test ride.

It shares the design of the modern Triumph naked models, introduced on the Speed Triple in 2005, with high-mount twin mufflers, dual circular headlights with a dashboard unit mounted on the top.

The 675cc three cylinder engine, borrowed from the Daytona 675, is re-tuned to make it more street friendly and usable as a daily rider naked, but still powerful in the category with 79 kW (106 bhp) @ 11,750 rpm.

The revised rear suspension results in a slightly higher seat height over the standard model and sharper rake.

The front brakes are also shared with the Triumph 675 Daytona, with a fully radial Nissin setup, master cylinder and calipers.

All these modifications make the bike both lighter and more agile; total mass was reduced by 6 kg, which is the lightest generation of Street Triples.

The 675 Street Triple gains also new suspensions, new brake discs that can be assisted by a multi-mode disengageable ABS, a coded key, more space under the saddle, a dashboard enriched with a fuel gauge, an improved finish, new mirrors and a discreet modification at the base of the tank.

This model reduces the stroke on the front, shortens the rear shock, eliminating rebound adjustment, and lowers the seat profile.

[16][17] The 2020 model was homologated by the FIM for racing in the World Supersport Next Generation class in 2022[18] In 2023, the R and RS versions got an updated more powerful engine of up to 130 horsepower, shorter gearing, higher-spec Brembo Stylema brakes (for the RS) and revised chassis geometry (raising the back reduced the wheelbase, rake and trail, leading to sharper steering).

Together with models from Ducati and MV, engines with a larger capacity than previously are to be allowed into Supersport World Championship racing from 2022.