NON-ROUND CHAINRINGS designed to increase leverage in the most powerful phase of the pedal stroke and then back it off in the weakest part aren’t new, but this absoluteBLACK ring has made a big impression on some of our testers.
What started years ago
with the timeless Widget has now become either a craze or passion. Mountain
bikers everywhere are ditching their excess chain rings, shifters and front
derailleurs. Reasons to do so abound: lower weight, greater simplicity, lower
running costs, wider range cassettes and of course fashion.
BLACKSPIRE ARE ONE of several companies producing single chainrings
inspired by SRAM's outwardly simple but actually super-cunning and extremely
effective chain-retaining alternating narrow-wide tooth design.