- Weight: 345g (170mm arms only), 625g (170mm, road axle, 50/34 DM Q rings)
- Lengths Available: 150, 155, 160, 165, 170, 172, 175
- Spindle Size: 30mm
- Compatible with Frame Shell: BSA, ITA, BB30-68mm, PF30, BB86, BBRight, BB386 Evo, T47
This crankset configuration uses our Direct Mount (DM) chainrings, the lightest and most adjustable chainring option available. By machining the chainrings out of a single piece of aeronautic-grade aluminum that mounts directly to the crank axle, this setup eliminates the need for chainring bolts and spiders.
Take control of your crankset with total modularity at a minimum weight with ROTOR's new ALDHU cranks. These streamlined cranks combine an innovative modular structure with top-tier 7075-aeronautic grade aluminum, allowing you to adjust your axles and chainrings to individually customize your ride based on your needs, and your bike's standards.
It begins with the 3D+ CNC machining to ensure unmatched rigidity from spindle to chainrings so you can take control on the roughest roads. The ALDHU is available with two different 30-millimeter spindle options that offer stiff power, and room for rim brakes or disc brakes. A wealth of crank-arm lengths allow you to optimize your power, while OCP Mount technology lets you further fine tune your ride with Q rings. The ALDHU’s proprietary, patent-pending design is based on the modularity of each crankset component.
Optimum Chainring Position (OCP) Mount technology allows the rider to fine-tune the orientation of ROTOR’s oval Q Rings by shifting them one degree at a time, finding the right balance in each pedal stroke for smooth power. This enables the rider to utilize the most powerful part of their pedal stroke to propel them further, and allow a touch of relief through the weakest points.
The ALDHU's name comes directly from our racing heritage. It is an abbreviation of Alpe d’Huez to commemorate ROTOR’s first iconic victory at the Tour de France with Carlos Sastre.
When to use the Offset Axle: The Offset axle is recommended for use with Shimano GRX drivetrains, particularly GRX front derailleurs. Other than in the case of GRX drivetrains (which have a chainline slightly outboard of most other groups) the Offset axle is typically reserved for disc-brake drop-bar bikes with tire clearance over 50c.