Lexmoto: Vienna 50 WY50QT-110, Vienna 125 EFI WY125T-121-E4, Vienna 125 WY125T-121. In the category of Suspension > Yokes, Yoke Bearings and Fixings > Yoke Bearings. The bottom yoke, also known as the lower triple clamp, is a crucial component in a motorcycle's front suspension system.