A Triumph Speed 400 averages €6,856 across all model years. Right now 14 are listed for sale, with the cheapest sitting around €5,290 (typically older years) and the priciest around €7,145 (recent years). The median is €7,045. A good price for a Triumph Speed 400 is under €6,995; anything over €7,145 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €5,284 to €6,340 for this model, depending on year and condition.