The caliper hoop is made of aluminum, while the opening arm is made of a special polyamide material. The caliper is also made of polyamide, and the tread is made of stainless steel. The 'AluPro' model basically performs the same functions as the Arena 'HiFlex' model, but is based on different materials.
Main features
Unique stress-actuated locking and unlocking mechanism located between the lower end of the outer stirrup pivot arm and the footplate/sole.
Easy, reliable re-engagement of the caliper locking and unlocking mechanism with a single click, once triggered.
Special spring effect
Thanks to its design and manufacture using flexible polymers, the stirrup gives the rider a less rigid and much more comfortable feel than with conventional products.
The arch of the stirrup and the foot support are able to absorb and effectively compensate for sudden, short-term impacts exerted by the rider's weight from above, for example when saddling up, jumping or riding.
Considerable benefits for the rider: significant relief for the soles of the feet, ankles, knees and hips, so also very interesting for riders with orthopaedic problems.
