The Shimano Exage 300EX FC-A300 crankset is a classic component from the late 1980s/early 1990s, designed with Shimano’s distinctive Biopace oval chainrings. With 170mm crank arms and a 52/40T double setup, this square taper crankset is perfect for vintage steel road bikes.

Item specifics:

Condition: Used – cosmetic wear consistent with age, fully functional.
Brand: Shimano
Model: Exage 300EX FC-A300
Type: Crankset (Double)
Crank Arm Length: 170mm
Chainrings: 52/40T Biopace oval chainrings
Bolt Circle Diameter (BCD): 130mm
Spindle Type: Square Taper (JIS)
Material: Alloy/Steel
Colour: Silver
Compatible Bike Type: Vintage Road Bike
Country/Region of Manufacture: Japan
Set Includes: Crank arms + chainrings

Why it’s special:

Period-correct for late 80s / early 90s road builds.
Features Shimano’s Biopace chainrings for unique pedalling dynamics.
Reliable, easy-to-service square taper design.
Great for retro restorations or as a replacement on classic bikes.

Stock: Only 1 available!
Price: €45

BioPace

Shimano EXAGE 300EX Square Taper Crankset FC-A300 170mm BIOPACE 52/40t 130 BCD