Triumph Street Triple 675

Was available as an inline 3-cylinder carburated 4-stroke of either 748 cc (45.6 cu in) called "750", or 885 cc called "900". The primary difference between the two engines was the stroke.

With the Tiger 900. This made use of softer cam profiles to produce a less powerful engine but with an even broader spread of torque.

Another variation of the 900 triple engine was introduced in the Thunderbird 900, a model intended for Triumph's first foray back into the US market. It had softer cam profiles and new carburettors, so power dropped again in favour of docility.

A sportier machine was produced, the Thunderbird Sport, using the Thunderbird engine with 6 speed gearbox and unrestricted air intake to give more power, 82 bhp (61 kW) as opposed to 69 bhp (51 kW), twin front discs and other details changes to produce an engine in a remarkably similar state of tune… With a ground up redesign to produce the fuel injected 955 cc (58.3 cu in) T595 Daytona engine, and the 885 cc (54.0 cu in) T509 Speed Triple engine, the latter using the original bore and stroke of the first generation engine. The claimed power outputs for these engines were 128 and 108 bhp (95 and…

The next generation of the triple emerged in the form of the Sprint ST 1050, swiftly followed by the Speed Triple 1050. The last of the 955 engined bikes – the Tiger – was updated, receiving the cases of the 1050 engine and other small changes although staying at 955 cc capacity until replaced by an…

. 2006 also saw the last year for the Daytona 955i, ending the production of big bore sporting triples. The Rocket III was joined by the Rocket III Classic, a more conservatively styled cruiser.

Triumph introduced a 765 cc engine, designed for Moto2 (2019 onwards) and the new Street Triple line (not yet Daytona).

A completely redesigned Rocket 3 with a new 2.5 litre (2458cc) engine was introduced.