The last time Triumph conducted a major revamp of its Street Triple family was 2013. At that press launch Triumph didn’t feel it necessary to include any track time because even the uptown R model remained predominantly a street bike. Four years on and Triumphhas reshuffled the Street Triple deck and expanded the portfolio to three models (S, R, RS), each with a specific focus including the new performance leader RS model we just finished testing in Spain. While still largely a street bike, the RS features enough go-fast performance Triumph felt compelled to showcase the bike’s wherewithal around one of the most famous Spanish racetracks, Catalunya.

While the 2013 Street Triple R was a substantial uptick to the original ’09 model, it maintained the same 675cc inline-Triple of the previous year’s bike. Not so at all with the 2017 incarnation. You’re probably aware Triumphbumped displacement of the new version 90cc, from 675cc to 765cc. What we learned from Triumph engineers in Spain, however, is the new mill was developed from the existing Daytona engine, not the previous year’s StreetTriple engine.
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https://www.motorcycle.com/manufacturer/triumph/2017-triumph-street-triple-rs-review-first-ride.html