400 Series Neck Diameter Listing

RamFlo 400 - 54mm (2 1/8") Neck

RamFlo 400 - 63mm Neck & Bridge 8mm Bolt

RamFlo 400 - 72mm Neck & Bridge 8mm Bolt

RamFlo 406S - 40.5mm (1 19/32")

RamFlo 409P5S - 52mm (2 1/32") Neck Offset Down

RamFlo 409P7S - 52mm (2 1/32") Neck Offset Right

RamFlo 409S - 52mm (2 1/32") Neck (Weber & Solex)

RamFlo 411S - 66.7mm (2 5/8") Neck

RamFlo 421S - 58.8mm (2 5/16") Neck & Bridge

RamFlo 422S - 63mm (2 15/32") Neck

RamFlo 423S - 63mm (2 15/32") Neck & Bridge

RamFlo 428S - 50mm (1 31/32") Neck

RamFlo 431S - 60mm (2 23/64") Neck

RamFlo 450S - 70mm (2 3/4") Neck

RamFlo 455S - 72mm Neck & Bridge