The ROTOR noQ Round Ring 52t is a round outer chainring built for five-bolt road cranks, meant to pair with a 36t inner ring for a mid-compact 52/36 gear range. Its aero profile is shaped to reduce air resistance on road and triathlon bikes, helping riders hold speed with less effort through each pedal stroke.
ROTOR CNC machines the ring from 7075 T6 aluminum, a light and durable alloy valued in aerospace applications. The tooth profile supports 10 and 11-speed chains, delivering smooth shifting and solid power transfer in a 2x drivetrain. As a round ring, it keeps the gear ratio constant through the pedal stroke for riders who prefer a traditional feel over an oval ring.
Quick Facts
| Feature |
Specification |
| Compatibility |
BCD 110x5, ROTOR 2x11s cranks, 10 and 11-speed |
| Position |
Outer ring, pairs with a 36t inner |
| Profile |
Round (noQ), aero outer |
| Material |
CNC-machined 7075 T6 aluminum |
| Intended discipline |
Road and Triathlon |