Rotor ALDHU CARBON Track Set Kurbelarme 30mm / Spider / Achse

The ROTOR ALDHU Carbon is more than just a lighter and stiffer crank from ROTOR

With the new carbon option, ROTOR gives you entry into the world of modular ALDHU cranks

The ROTOR Aldhu Carbon® is a new generation of super light and stiff cranks with unique variability and upgradeability.
Our engineers spent four years developing our new flagship in order to once again surpass the highly developed Aldhu made of aluminum. The result is a modular crank system with a significant reduction in weight while at the same time significantly increasing stiffness. The Aldhu Carbon is made from high-end carbon and beautifully refined
A gem on every bike. Increases in weight can be elegantly compensated for by disc brakes without losing the necessary rigidity.

How much lighter and stiffer is Aldhu carbon?
ROTOR's first-generation aluminum ALDHU® weighs just over 600 g with a 172.5 mm crank arm length and 50/34 direct mount chainrings, a top value for extruded and CNC-manufactured cranks. Taking advantage of high-end carbon fiber, the new carbon crank arms save around 100 g and the total weight drops to 523.5 g!
At the same time, the absolute vertical and horizontal stiffness of the cranks was increased by 11% and 36.1% respectively.

Twin leg technology
ALDHU® Carbon crank arms were developed in combination with ROTOR's 30mm axles. The patented interface between crank arms and axle offers easy installation with a tight fit. The design solves a specific problem, namely preventing power losses caused by axle torsion of the axle under pedal force. The ROTOR axes effectively reduce power losses. At ROTOR we call the balance that is achieved to minimize these losses.

The ALDHU, based on the ROTOR CARBON, is a fully modular system and completely dispenses with the set of left crank arm and combined axle/spider/right crank arm that has dominated for decades.

The high-quality and light spider/axle set rounds off the modality of ROTOR ALDHU products. The set consists of a spider with multiple teeth and a 144mm bolt circle with 5 holes so that the lightweight Aldhu/Vegast crank arms can also be used on the track. You also get a matching, lightweight aluminum ROTOR ALDHU track axle. You can combine these modularly with the new Vegast or ALDHU crank arms. The Track crank axle ensures a Q-factor of 140 mm and a chainline of 43.5 mm, which is ideal for use on track bikes or fixie bikes. The larger diameter increases rigidity and enables better power transmission with a lower weight. To use the Track axle, the ROTOR Track bottom bracket must be used.

• Material: Aluminum 7075-T6 (100% CNC)
• Arm length: 165, 170, 172.5 or 175mm
• Bottom bracket: Only compatible with Rotor Track bottom bracket 30mm
• Chainline: 43.5mm
• Q factor: 140mm
• Pedal thread: standard 9/16"
• Color: Black