Surface Finish: polished billet aluminum Item Diameter: 54-55mm Fits: ANY HONDA DOHC CB750 CB900. (I also have SOHC CB750 stacks. you get all four full-taper Type velocity stacks. I DO CARRY MIKUNI STACKS! Q: What is the overall length if these velocity stacks Country/Region of Manufacture: United States, Universal Fitment: No, Performance Part: Yes, UPC: Does not apply Manufacturer Part Number: 54-55mm velocity stacks 79-81CB750/900, Material: Aluminum, Item Length: 70 mm, Vintage Part: No, Modified Item: No CB900 DOHC Ansaugtrichter HONDA CB750 CB900 DOHC 54mm-55mm Velocity Stacks Polished Velocity Polierte Alu Velocity Stacks 54-55mm CB750 CB900 DOHC