Stronglight HT3 chainrings come with an extra hard surface for a long life time. Friction and abrasion are significantly reduced. Narrow-wide teeth profile for 1x drivetrains. Available with various teeth counts.
These chainrings allow to convert your triple crank into a double crankset. Oval Rotor Q-Rings increase your power by emulating a Rotor System crankset. For 4-arm spider with 104/64mm bolt circle diameter.