Rotor's Aldhu Q Spidering Oval Direct Mount Chainring Set features patent-pending, proprietary technology that allows the oval Direct Mount to be adjusted in 1-degree increments for optimized pedaling biomechanics. 12.5% ovality heightens the performance advantages of oval chainrings. Rotor claims that no other oval chainring on the market offers the adjustment options plus unique ovality.
Here's how Rotor's new cranksets work — everything is modular. You choose the arms, the spindle, and the chainring. And whether you want a power meter-equipped spider, spindle, crankarm, or none of that. You can even choose between round and oval chainrings. Then piece it all together to create the exact system that suits your specific needs.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
52/36 Tooth (Oval)
Mfg PartNum: C01-039-09010-0
53/39 Tooth (Oval)
Mfg PartNum: C01-039-08010-0
Ive used previous version of Rotor Q Rings with a separate spider. I recently upgraded to Rotor 2in Power meter. I had no choice and had to buy the new Q Rings with direct mount. This is much simpler design and attaches to crankset much easier, as compared to the old spider version. I also like the bigger oval (12.5%).
The new setup looks and works great.