HPI Racing main carburetor body is constructed of black and purple aluminum and composite material. Low speed spray bar is preinstalled. This is a two needle carb body.
Base Throat Inner Diameter: .41 (10mm)
Outer Diameter: .55 (13mm)
Intake Throat Inner Diameter: .51 (12mm)
Outer Diameter: .61 (15mm)
Assembly onto Engine.