Year of
introduction

SHIMANO  TIMELINE

1921

Shozaburo Shimano establishes Shimano Iron Works and begins production of the original Shimano freewheel.

1931

First export of the Shimano freewheel

1940

Company name changed to Shimano Iron Works Co., Ltd.

1956

First Shimano derailleur

1957

First Shimano 3-speed internally geared rear hub

1965

Shimano American Corp. established in NY

1967

"Sky-Lark" derailleur and "Servo-Pantograph" mechanism

1971

1st Gen Dura Ace wi/Crane derailleur (7100 series)       

1973

 

600  introduced

 

1976

Dura Ace black
anodized & Track

 6100 series  

 

1977

New Dura Ace
7100 series
& Dura Ace 10

 

 

1978

EX
 7200 series  

600 EX Arabesque
 6200 series  

 

1981

AX
 7300 series  

 AX 600
 6300 series  

 

1982

 

New 600 EX
6207 series

 

Post Classic Rendezvous time line

1984

7400 series 
6 speed SIS

 

 

1985

Track
7600 series

 

 

1987

7400 series 
7 speed

 

Sante
5000 series

1988

7400 series 
8 speed

Ultegra
6400 series

 

1990

7400 series
STI shifting

 

 

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