Rotor Aldhu 3D+ Crank Arms

The OCP mount gives riders precise one-degree adjustments with Direct-Mount Q Rings from Rotor, also working with Rotor's Aldhu 3D+ Spider mounted to 110 BCD Q Rings. Ultimately, OCP adaptability sets the Aldhu 3+ crank system apart from others on the market by tailoring the Q Ring position to suit your individual pedal stroke for increased efficiency.
This modular crankset requires the separate purchase of Rotor's Aldhu 3D+ Spindle (30mm), as well as an Aldhu 3D+ Spider with a compatible 110 BCD Ring. You can also choose to purchase the spider and chainring attached as one if you prefer a seamless direct-mount option. And because it's designed with customization in mind, Rotor offers oval and round options in both crankset configurations to suit your particular needs.
Rotor employs CNC-machined 7055 aluminum alloy with Trinity drilling technology to produce incredibly lightweight, ultra-stiff crank arms worthy of discerning cyclists and the pros alike. In fact, the Aldhu 3D+ name is derived from a legendary climbing stage in the French Alps that earned Rotor a 2008 victory on the world's most iconic race.

-Modular crank arms are incredibly light and stiff
-Rotor's lightest crankset of CNC-machined 7055 alloy
-Optimal Chainring Position with one-degree adjustments
-Direct-Mount with Aldhu 3D+ Spindle (30mm), 110 BCD Spider
-110 BCD Round and Oval Q Ring options with Aldu 3D+ Spider
-Seamless integration with Rotor Direct-Mount Rings (oval and round)
-Item #RTR0032