for Vespa 125/PV/ET3/PK inner diameter: 34mm outer diameter: 44mm direct intake rubber connection stuffer TUNING RACE – for professionals Product description Cristian 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! This ‘M-Racing’ reed-valve manifold by CRIMAZ is compatible with all QUATTRINI cylinders equipped with six bolting points for the manifold positioning. It is intended to be combined with the original QUATTRINI reed-valve assembly. The carburettor can then be mounted directly o