Clutch SERIE PRO HiT by Dr. Pulley for Vespa ET2/ET4/LX/LXV/S/Primavera/Sprint 50ccm 2T/4T

The HiT coupling from Dr. Pulley from the SERIES PRO series rounds off the high-end range of couplings. The HiT coupling enables a high contact pressure not only through centrifugal force, but mainly through the torque of the motor. It consists of two basic parts that can be twisted into each other: by means of a sophisticated sliding or wedge system, the jaws are pressed internally against the bell by an extra force (in addition to the normal centrifugal force, as is the case with ordinary clutches). The stronger the engine (or the stronger the resistance the engine has to fight against), the tighter the sliding wedges press the clutch shoes against the friction surface of the clutch basket. The loss of power in the clutch is reduced.

Other clutches start to slip at certain rpm or speeds, the HiT clutch does not. The everyday driver will benefit by more power on hills and when overtaking. The sporty rider will appreciate the increase in power in the upper rpm range.

3-jaw racing clutch, adjustable by 2 different spring kits for the jaws, as well as the base plate, different spring strengths included, large pads. Up to 30% higher contact pressure, slip-free power transmission, lower frictional heat, better acceleration. Adjustment tips and installation instructions included.

The adjustment is made by 2 spring systems. The first still controls the position of the starting speed at which the clutch should engage. The second here unique springs control the aggressiveness of the frictional connection through the wedge system. For the high-end range, we directly recommend the installation of the two hardest spring types.

INFO: New clutch nut, clutch retaining tools, quick cleaner, reinforced clutch basket.