Special parts from CRIMAZ for Vespa engines—well-thought-out, detailed solutions based on Italian racing experience.

Cristian Mazelli is a Vespa enthusiast through and through. He has been active in Italian Vespa racing for years and has repeatedly encountered problems and parts of insufficient quality that he found unsuitable. These experiences, combined with his professional expertise in development and design, now go into his own line of specialty parts, which he markets under the name CRIMAZ. The result is beautiful, high-quality solutions for specific details.

These primary-drive cogs by CRIMAZ for the Vespa smallframe engines have been designed including an exclusive feature. They are pressed into position over a conical shaft, enabling them to transmit more power than the original set up.

CRIMAZ recommends they be tightened to between 60/70 Nm.

The CRIMAZ produced primary-drive cogs are arranged in groups to suit the variety of clutch cogs available.

22-23-24-25 cog teeth for 72

25-26-27-28 cog teeth for 69

28-29 cog teeth for 67

23-24-25 cog teeth for 61 diagonally cut teeth

These primary-drive cogs can be combined with the cogs produced by various manufacturers such as CIF, Newfren, RMS, Olympia, Ricambio Rapido, PINASCO and DRT. The diagonally cut cogs are conceived for use with the original transmission components found in the Vespa ET-3/Primavera models engines.

For easier removal these cogs are provided with three threads to which a special adapter, also by CRIMAZ, can be attached.

The larger cogs with 37, 28 and 29 teeth can, under circumstances, come into contact with the engine casings during use. To avoid this check for clearance and modify the engine casings prior to final assembly.

Conclusion : A clever solution for a solid connection between crankshaft and primary-drive which is also available to suit various transmission set ups!

SIP - TIP : Do not forget to order the suitable shaft nuts (#40440920) by CRIMAZ and a new clutch cover gasket (#90898500).