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Description
Conceived to offer extra flexibility when it comes to choosing your crankset, Rotor's new ALDHU 3D+ modular system is their lightest available and the ALDHU Direct Mount Q Chainrings weigh a mere 178 grams. With the name being an abbreviation of Alpe d'Huez, this technology was named to commemorate Rotor's first iconic victory in the Tour de France.
OCP Mount technology allows one-degree adjustments to chainring position and by utilising your OCP (Optimal Chainring Position) you can reduce stress on the knees while improving your pedalling efficiency for enhanced performance. 12.5% ovality ensures you activate all muscle groups fully for increased power output.
CNC'd from 7075 aluminium and with an integrated configuration, there are fewer individual parts which in turn results in reduced weight with no compromise on durability.
Compatible with most bikes and standards, the modular system means that when parts start to wear out there is no need to replace the whole unit. Assembly is simple, requiring only one 10mm allen key, and the laser-etched black anodised finish will look great on any bike.
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Important Update for Our US Customers
We regret to inform you that due to ongoing challenges related to current US tariffs, shopping on Sigma Sports is temporarily unavailable for customers based in the United States.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our US community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team