New vehicle certification documents from the California Air Resources Board and the U.S. Environmental Protection Agency confirm two new Triumph models using the Street Twin‘s 900cc engine.The government agencies have officially certified two new models for 2017, a new Bonneville T100 and a new model to be called the Street Cup.Pictured above is the Bonneville T100 which has been spotted, at least in its cladded pre-production form. The styling is mostly identical to the T120 Black but with the engine from the Street Twin, read more about it here.The one raising eyebrows is the Street Cup, Triumph typically likes to pull model names from its 130-plus year history, especially with its “modern classic” models. The “Street” part maintains that tie to tradition, but “Cup” would be a new entry to Triumph’s nomenclature. “Cup” may suggest a racing variant (Triumph has in the past operated a Street Triple Cup and the American Historic Racing Motorcycle Association still runs a Thruxton Cup Challenge), or a cafe racer version of the Street Twin. Another possibility is a touring version (Cup being short for Trophy).The documents also confirm that both motorcycles will use the new 900cc motor used in the Street Twin, although it could be in a slightly higher state of tune, to give it a performance gain over the Street Twin, which makes 55bhp and 79Nm of torque.