Fits all FSA ABS (asymmetric bolt spacing) cranks like the Gossamer, SL-K, and K-Force, including both 4 & 5 bolt designs (while only utilizing 4 bolts)
For Gossamer - use original FSA bolts and spacers; for SL-K - use original FSA bolt covers and bolts; for K-Force - must use Absolute Black bolt covers, purchased separately
Inner and outer oval chainrings are optimized with smooth shifting in mind
Features smooth angled surfaces, (6) up-shifting ramps (outer ring), and (12) down-shifting points (outer ring)
Oval rings help the rider to spin smoother and more efficiently
Example: 32t is equivalent to 30t at dead spot and 34t at the power zone
Compatible with 10/11/12sp and Di2
Designed in UK, manufactured in Poland
| speed |
10/11/12sp |
| mount |
4 or 5x110BCD |
| teeth |
39t |
| oval/round |
oval |
| color |
black |
