Rotor Road Inner Q-Ring One Color, 39T/130mm

Rotor CR-Q130-0039-B Rotor Road Inner Q-Ring One Color, 39T/130mmReview

Rotor CR-Q130-0039-B Rotor Road Inner Q-Ring One Color, 39T/130mm

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Are you looking for Rotor CR-Q130-0039-B Rotor Road Inner Q-Ring One Color, 39T/130mm.

Rotor CR-Q130-0039-B Rotor Road Inner Q-Ring One Color, 39T/130mm

Rotor Road Inner Q-Rings are designed to capitalize on the strongest part of your pedal stroke and minimize the negative effects of the weak portion known as "dead spots." The Q-Rings have a subtle oval shape and, with multiple mounting holes, can be "clocked" to maximize the effects of your biomechanics, pedaling style, and bike geometry. And aside from those benefits, the shift pins and ramps on the Q-Rings have been redesigned to provide faster shifting.The Q-Ring's oval shaping smoothes the pedal stroke through the dead spots and takes advantage of your power potential at the optimum time -- in the power zone. The multiple mounting hole system is called OCP (Optimum Chainring Positioning) and it allows each rider to maximize the benefit of the Q-Rings. The long axis of the oval chainring should be vertically aligned in the power zone when the crankarms are at or just below horizontal. This position gives the rider maximum leverage, and therefore maximum torque transmission to the rear wheel. Inversely, the short axis of the chainring is aligned so that it nears the vertical when the crankarms are also close to vertical. The short axis of the oval creates a shorter lever when you make less power. The effect is a subtle acceleration of the legs through the top and bottom of the stroke and less muscle strain at these traditionally weak points in the cycle. With Q-Rings, you'll put more power to the ground while taxing your muscles less. Rotor Road Inner Q-Rings are made with hard anodized CNC machined 7075 aluminum. They are available with a black finish. They fit Rotor Agilis and 3D Cranksets and are also compatible with most every crankset and BCD (bolt circle diameter) currently available -- 110mm compact, 113mm Campagnolo compact, 130mm standard, and 135mm Campagnolo standard. The 113mm and the 135mm Campagnolo-specific rings will work with 10-speed Ultra-Torque cranksets, but they are not compatible with 2011 11-speed cranks due to a new fastener design.