Rotor
Rotor

Rotor Qx2 MTB Chainring 104Bcd

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Item #: CG218A20
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Rotor QX2 Chainring 104 BCD

Whether it be a pro rider on TV or a fellow local cyclist, you may have seen these ovalized chainrings at one time or another. You then probably immediately asked yourself, "What do they do?" Let us explain.

Rotor's ovalized Q-Rings vary drivetrain resistance during a pedal rotation to align with your leg's natural strength spots and weak spots to boost your overall efficiency. In doing so, Q rings wisely utilize the strongest muscle groups to increase positive work, while picking up the slack in the weaker zones to reduce the negative work, smoothening out the rotation to a perfect spin that can shave seconds from every kilometer you pedal. This advance may seem miniscule, but in a sport where a second can be the difference between the top step of the podium and no podium at all; this type of advantage can be substantial.

Through Rotor's Optimum Chainring Position (OCP) you have approximately 5 degrees of adjustment meaning you can micro adjust the position of your Q Rings to suit your style by simply making corrections toward both comfort and efficiency. Machined from 100% CNC T6 7075 Aluminum, this model of the mountain bike specific QX2 was designed to work with 9, 10, and 11 speed mountain cranks with a 104 bolt center diameter (BCD.)

Whether you're a dedicated cross country racer or a versatile enduro specialist, mounting Rotor QX2 rings to your steed is a sure step toward increased endurance, explosive sprints and graceful climbing.

Features:

  • Tooth Options: 40, 38T
  • 100% CNC, T6, 7075 Aluminum
  • Steel shifting pins
  • 104 BCD
  • 3 OCP regulation points
  • 9, 10 and 11 speed crank compatible
  • Some cranks require specific Q-Rings
  • Weight: 110g for 40/27T & 95g for 38/25T

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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

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