hurry up! offer ends in: FSAW0147WB48734T - Acciaio, 34T, Boost, linea catena 53mm FSAW0147WB48838T - Acciaio, 38T, Boost, linea catena 52 FSAWO138WB45338Z - Alluminio, 38T, Boost, linea catena 52mm FSAW0134WB48638T - Alluminio, 38T, linea catena 50mm