Triumph have used Mikuni and Keihin carburettors. This part fits models with Mikuni carburettors and is an unrestriced inlet rubber.
As original fitment on 750/900/1000/1200 Daytona, Daytona Super III, 750/900 Speed Triple, Trident Sprint, Sprint 900, Sprint Executive, Sprint Sport, 750/900 Trident, 900/1200 Trophy, 900 Tiger (carburettor) and Thunderbird Sport.
The 900 Thunderbird range originally had restricted inlet rubbers to give more bottom end performance at the expence of mid range and top end. The unrestricted rubber listed here can also be fitted to the following models instead of the restriced inlet rubber: Adventurer, Legend, and Thunderbird