The traditional one uses a classic clamping via a screw inserted into the steering head at right angles to the fork. The modern version, as used in the Vespa models of the Vespa PK XL2, Cosa and T5, has a continuous thread on the steerer tube and is therefore also fastened from above with large nuts, similar to the lock nut of the headset. A compensation sleeve provides the necessary compensation on the circumference of the upper steerer tube. The CNC manufactured clamp fixes the handlebar securely to the fork tube.
Made in Germany by Gelb
(US)