h 48,8 mmtype: round/50,2mmincl. springProduct descriptionCristian Mazelli is a dedicated Vespa enthusiast and he has been most active on the Italian scooter racing scene for many years. During his time as a racer he was constantly faced with material and part quality problems he deemed as unsuitable for the task in hand. To ease these bottlenecks in supply he decided to use his career-based knowledge of industrial research and development to create parts under his own name that he now markets under the ‘CRIMAZ’ logo. Beautifully detailed solutions combined with very high production quality are the results! Differentiation of 4-speed Vespa Smallframe gear selectors. For the 4-speed engines of the Vespa Smallframe models, there are two different gear selectors that fit different gearboxes or their gearwheels. There are two characteristics that distinguish the two types of gear selectors. 1. the shape of the transition to the upper end of the selecor. The later “PK type” has a radius t