Regina Gran Sport Corse (Soc. Ital. Cat. Cal.Merate) 5-speed Freewheel with 15-25 teeth and italian thread from 1957 hirzl Corse (Gran Sport Tipo Corsa)

Corse (Gran Sport Tipo Corsa) 5-speed Freewheel with 14-24 teeth and italian thread from the 1960s

Tube set / Rohrsatz: Reynolds 531 (most probably)

This style is preferred when using taller

Hi-Tech Four

45 - 57 mm

Regina Gran Sport Corse (Soc. Ital. Cat. Cal.Merate) 5-speed Freewheel with 15-25 teeth and italian thread from 1957 hirzl Corse (Gran Sport Tipo Corsa)Regina Gran Sport Corse (Soc. Ital. Cat. Cal. Merate) 5 speed Freewheel with 15 25 teeth and italian thread from 1957 Weight Gewicht : 360 g Gears bertragungen : 5 Range Abstufung : 15 17 19 22 25 Thread Gewinde : 35 mm x 24 F. (ITA)Production period Produktionszeitraum : 1950s 1950erCondition Zustand : See pictures Siehe Bilder Note Bemerkung: In theory also fits english hubs Passt theoretisch auch auf BSA Naben Source Quelle: Sheldon Brown