100% Condition New!Type: The Bicycle Exhaust System， motorcylce sound exhaust pipeSize: Length 34cm， Diameter 8cmFeatures:1.Real scale metallic coating exhaust pipe 2.Six kinds of true wild motorcycle sound 3.Suit for bicycle (BMX mountain bike racing) 4. 100% human power without electricity 5.Contains a full set of assembly tools 6.Five minutes fast installation 7.Three sheets tuning Motocard card 8.Make any of your bike like a motorcycleProduct Include:Stickers X1 ， Assembly tool X1 ，Turbo exhaust pipe X1 ，Motocard sound card X3 (T500 / T250 / T100) ，Host booth X1 ，Assembly screw X2 ， Belt X1 ， Tail exhaust pipe mouthX1 ，Elastic gasket X2 ， The multinational language instruction X1Contact us if any problem.