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Description
Rotor's innovative ALDHU 3D+ technology features a modular structure so individual components can be replaced for a customised set up suited to each individual riders needs. Mounted directly onto the crank arm, the ALDHU Direct Mount Round Chainrings create a rigid structure subject to less stress and friction thanks to the need for fewer bolts. Simple, and around 30 grams lighter than a standard chainring combination, yet still highly durable.
The patented anchoring system of Optimal Chainring Position (OCP) Mount technology ensures a robust, smooth engagement between the direct mount and the axle for efficient power transfer. The tooth design benefits from all Rotor's technological experience in developing oval Q-Rings and shifting is fast and accurate, regardless of the conditions.
With all components available individually, set up is easy, and all you will need is one 10mm Allen key, so there should be no need to replace the whole unit if parts get worn. A laser etched black anodised finish offers a subtle design that will complement all bike setups.
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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