POLINI POWER EXPLOSION Motori has developed a new cylinder kit using Formula 1 engine technology. Thanks to a special steel liner with Nicasil coating and the HTR ring (High Turbulence Ring), it has been possible to increase the bore to 77 mm and increase the displacement from 278 cm³ to 294 cm³.
The cylinder kit can be fitted to the crankcase and the original head without modification. An exclusive detail on the scooter market is the HTR ring which, in addition to improving the squish effect (acceleration of the mixture in the combustion chamber), enables a larger contact surface for the cylinder head gasket and ensures a high level of reliability.
The piston has a wider skirt and the combustion chamber has been designed to provide the best compression ratio with wide squish surfaces that perfectly match the original head.
The kit contains:
Complete cylinder kit with pistons, rings, bolts, clips and gaskets as well as CDI with cable branch. For use with original cylinder head (Euro 3 and Euro 4 - also HPE).
The CDI has two characteristic curves for different tuning steps.The first is suitable for installation with POLINI POWER EXPLOSION Hi-Speed Vario, cylinder kit and original silencer.The second is for the combination of POLINI POWER EXPLOSION Hi-Speed Vario, cylinder kit and POLINI POWER EXPLOSION silencer.With the new kit, the power is already noticeable from low revs and the engine works very powerfully across the entire rev range.
The cylinder kit is connected to the original system with plug-and-play CDI - no modification to the wiring harness necessary and easy to retrofit.
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