throttle pulley adapter SERIES PRO short stroke, the steering tube, for Vespa 125 VNB3-6 / 150 VB1 / VBA / VBB / VGLA-B / T3 / T4 / GS VS2-5 / 160 GS aluminum, with cable fixing plate.

SERIE PRO short stroke throttle pulley adapter,steering headstock, for Vespa 125 VNB3-6/150 VB1/VBA/VBB/VGLA-B/T3/T4/GS VS2-5/160 GS aluminium, with cable fixing plate. ATTENTION: the PX throttle pulley will still be needed PRO SERIES throttle valve rolls replace the necessary quick action knob in the case of large carburettors. The throttle valve rolls are designed so that a 34 millimetre carburettor can also be opened with a quarter turn of the throttle grip. Initially, the throttle rolls were designed for PX and PK models, but demand for the older models rose very quickly, as also in the case of our 'old ladies', the original look plays an important role. Butterfly rollers are now available for the 1960s/1970s large frame models. Butterfly valve rollers do not fit Vespa 125 VNA/VNB1-2 models with sheet steering head cover.