This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1974 Triumph T120V Bonneville was reportedly modified for vintage racing under previous ownership circa 2006, and is powered by a 650cc parallel-twin paired with a 5-speed transmission. The bike has been repainted in a blue and silver scheme, and is fitted with a competition-style seat, minimal instrumentation, reverse-cone mufflers, an updated front fork, Sparx electronic ignition, and a front disc brake. This Triumph is registered for the road in Georgia and is now offered by the selling dealer with a clean Georgia title.
The seller believes the bike was repainted within the last few years, and the single-saddle seat is equipped with a faring. The pads have been removed from the fuel tank, and the exhaust system features chrome head pipes and reverse-cone mufflers. A headlight and taillight are fitted.
A later-style front fork is installed, and the bike is equipped with a hydraulically-actuated front disc brake with a 4-piston caliper. Chrome wire wheels are fitted with Avon RoadRider tires showing 2010 date codes. A British-style number plate is installed on the front fender.
Clubman-style bars are fitted, and the bike is equipped with a newer Smiths 120-mph speedometer, Lucas start-stop switch, and vintage-look grips. 50 miles are shown on the mechanical odometer.
The 650cc parallel-twin is fed by dual carburetors featuring velocity stacks and is paired with a 5-speed gearbox. The seller notes that the engine appears to have higher-than-stock compression, and requires increased effort to kickstart. 110 octane fuel is reportedly required. The bike is equipped with Sparx electronic ignition and a solid-state charging system.
The engine number stamping is pictured above and is reported to match the frame. A walkaround and ride video is viewable below.