ROTOR ALDHU Spider
The new ALDHU spider features a cleverly designed spline interface which mounts to the ALDHU axle. This combination delivers a robust yet smooth engagement allowing you to maximise the efficiency in transmission of power in your pedal rotation. Combined with the new ALDHU cranks and oval or round Q-Ring chainrings, the innovative spider includes refined Optimum Chainring Position (OCP) mount technology so you can now adjust your optimal chainring position by precise one degree increments.
Engage your unique OCP to unleash a more efficient pedal stroke, reducing knee stress and possible injury. The enhanced 12.5 percent ovality heightens your performance advantages providing full activation of muscle groups, creating more power and diminishing long term knee strain.
The modular system of ALDHU means you can choose the components individually. Simply choose your:
3) Separate spider and spider mount Q-Rings; or one-piece direct mount chainrings
Axles are available in 24mm and 30mm sizes (see here).
Spiders are available in 110 BCD with 4 arms, and 5 arms for riders with existing 5 bolt Q-rings.
The new 4 bolt spider mount Q-Rings are available in round and oval versions as 53, 52 and 50 outer rings, and 39, 36 and 34 inner rings (see here for the oval inner Q-Rings).
The new one-piece direct mount chainrings are available in round and oval versions as 53/39, 52/36 and 50/34 combinations.
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.