QO RACE Aero Outer Chainrings are built for uncompromising road performance. Precision-machined from 7075 T6 alloy and engineered for maximum stiffness, these rings deliver instant power transfer with minimal flex—perfect for high-cadence efforts, explosive sprints, and smooth, consistent speed.

The aero-profiled design reduces drag while maintaining sharp shifting and responsiveness under load. Paired with the QO RACE crankset and 110x4 spider, it's the outer ring of choice for riders who want every watt to count.

Features:
– 7075 T6 CNC-machined alloy construction
– Aero-profiled outer ring design
– Enhanced stiffness for powerful pedaling and high-speed efficiency
– Compatible with QO RACE Spider (110x4 BCD)
– Available in 50T, 52T and 54T

Tech Specs:
– 2x drivetrain optimized
– Hard-anodized finish for long-term durability
– Bolt circle diameter: 110mm x 4-bolt
– Weight: 146g (52T)

Stiff, sleek, and built for speed. 100% QO.

Not compatible with:
- Shimano cranks
- SRM spider power meter"