Dellorto Velocity Stack Billet Alum 38-40mm Ducati Moto Guzzi Norton Wheel these should fit '54-'59 Pre-unit

these should fit '54-'59 Pre-unit Triumph (GENERATOR MODELS) except TR5 Trophy (rigid frame model)

but would easily retrofit to something earlier

Ratio is 4-1

If your standard o/h line hasn't blown yet

meant for gauges with adjustment from UNDERNEATH the instrument body

Dellorto Velocity Stack Billet Alum 38-40mm Ducati Moto Guzzi Norton Wheel these should fit '54-'59 Pre-unitAmazing replica of the plastic stack that everyone is paying a pile for nowadays. This version in highly polished aluminum, with stainless screen. The most beautiful stack on the market, guaranteed! Pairs available in another listing, for less cost. Suitable for any Dellorto round slide carb with 38 40 41mm venturi, to my knowledge. Thread 52mm x 1. 25mm.