Dating from 1988 this Shimano Exage Sport chainset comes with a pair of computer designed Bio Pace chainrings and a Shimano bottom bracket. The 130 BCD chainrings are 42 inner and 52 outer, Bio Pace and for 3/32″ chains (will work with most drive trains up to 9 speed) and the JIS square taper BB is British thread. Exage Sport was (according to some) the best of the Exage branded road parts and was just above entry level, while the cranks and BB are typical Shimano quality they are fairly hefty!
- Model: FC-A450 and BB-A450
- 130 BCD 42 and 52 tooth Bio Pace chainrings
- JIS Square Taper
- 170 mm arms
- British thread BB
- Standard 9/16″ pedal threads
- Date stamped 1988
- Made in Japan
- In original box
- Includes dust caps (not pictured)