This our Silverback Duel Limited Edition(whatever THAT means lol)3x9 sport tandem. It has Ultegra rr der, Sora frt and Altus shifters and levers. Tektro calipers, cf fork. The gearing is 30-42-52x12-32. Alex dw set. 40h rr, 36h frt. Conti Gatorskin 700x23mm. Saddles are no name that we'll upgrade at some point. The ride is solid, steady and predictable.. We're using platforms while gaining experience. We'll upgrade to dual-sided spds when we're ready. Shifting is smooth and accurate. Would like to move to mechanical disc at some point, but the rim brakes are fine for now. Money well spent to get us started. We thought about touring with it, but it has limits that makes it not suitable for a lengthy tour. All in all a very nice bike. 👍