For ultimate in single ring performance, throw the new Rotor QX1 MTB 'Q-RINGS' on your REX single speed cranks. You’ll be using the same chain ring set up that led Christoph Sauser to victory at the Cross Country Marathon World Championships.
The QX1 has an increased ovality of 12.5% to help you accelerate better, feel less muscle fatigue, experience smoother torque and better grip off road.
The alternating thick/thin tooth profile keeps your chain from dropping in even the worst conditions, eliminating the need for a chain guide or tensioner.
It is compatible with Rotor Rex 1.1 and Rex 2.1, SRAM XX1 (GXP and BB30) and Specialized cranks thanks to crank specific spiders from Rotor.
76BCD ring option - Please note QX1 rings have a unique BCD and will need adaptor spiders listed to fit Specialized or SRAM single cranks