A Triumph Speed Triple 955i averages €2,633 across all model years. Right now 3 are listed for sale, with the cheapest sitting around €1,700 (typically older years) and the priciest around €3,699 (recent years). The median is €2,500. A good price for a Triumph Speed Triple 955i is under €2,100; anything over €3,100 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €1,875 to €2,250 for this model, depending on year and condition.