NOS Shimano Dura-Ace AX/EX Cassette Top Sprocket for 6- & 7-speed, threaded on inside with 12 teeth #3571217 jansen-oomen Four aluminum alloy stays -

Four aluminum alloy stays - use two for a weight capacity of 12 lbs or use all four for a weight capacity of up to 17 lbs

- Length 190 mm

480 - 510 mm

Production date / Produktionszeitraum :1980 - 1987Please note / Bemerkung :Unsure wether  this front derailleur has been introduced in 1980 or 1982

Bottom of stem has ben sewed of with an angle in order to be used wedge expender

NOS Shimano Dura-Ace AX/EX Cassette Top Sprocket for 6- & 7-speed, threaded on inside with 12 teeth #3571217 jansen-oomen Four aluminum alloy stays -Weight Gewicht : 20 g Scope of delivery Lieferumfang: 1 sprocket (#3571217) 1 Ritzel (#3571217)Spare part no. Ersatzteile Nr. :#3571217 Teeth Zhne : 12 Condition Zustand : New old stock (NOS), see pictures Neue alte Lagerware. siehe Bilder Production date Produktionszeitraum : 1970s 80s 1970er 80er Please Note Bitte beachten : Has been used for other shimano hubs of that period as well, some excamples are: Shimano Dura Ace AX #FH 7370 Shimano Dura Ace