Size : Air inlet side inner diameter is 19mm/0.75in, outer diameter is 23mm/0.91in. Air filter side inner diameter is 31mm/1.22in, outer diameter is 37mm/1.46in.Size : Air inlet side inner diameter is 19mm/0.75in, outer diameter is 23mm/0.91in. Air filter side inner diameter is 31mm/1.22in, outer diameter is 37mm/1.46in.Installation : Easy to install without any modification, direct replacement for the old or broken one, convenient for using, save your time.Material : The carburetor assembly is made of metal material, rustproof, high strength, sturdy and durable, has a long service time.Performance : Professional manufacturing, exquisite workmanship, stable and reliable, can withstand harsh conditions.Fitment : The carburetor is replacement for Arctic Cat 50 90 2×4, replacement for Bombardier DS50 DS90 PGO Big Max, for Jog 50cc 90cc 100cc scooters, etc.Fitment : The carburetor is replacement for Arctic Cat 50 90 2×4, replacement for Bombardier DS50 DS90 PGO Big Max, for Jog 50cc 90cc 1