Where performance begins, the Cannondale One Si Chainset by FSA is strong and reliable crankset compatible with all groupset choices. FSA chainrings are compatible with other chainsets with the same BCD, the 50T is 4 arm x 120 and the 34T is 4 arm x 90 Specification BB Spindle Interface: SI . BB Compatibility: BB30 / PF30. Speed: 10/11. Material: Aluminium. BCD: Hollowgram 4-Bolt 120/90 BCD.
Best Price: £59.95 from Merlin Cycles