3820034 Spacer cylinder base -BGM ORIGINAL Polini 207 ccm - 210 ccm - 221 ccm - Vespa PX200, Rally200 - 1.5mm

If a crankshaft with a longer stroke is used, this additional stroke has to be compensated for for two reasons. On the one hand due to the mechanical conditions to prevent the piston from hitting or the engine runs too highly compressed, on the other hand to keep the control angle of the cylinder, which determines the performance, within a reasonable range. If the stroke is extended, [...]

Cylinder base spacer for the Malossi cylinder Sport and MHR with 210ccm. This can be used to support the cylinder in order to increase the steering angle that is important for performance. The MHR cylinder in particular has turned out to be a very grateful candidate for a lift, despite its much larger flushing cross-sections than its predecessor. A prerequisite is an environment that corresponds to the cylinder, such as [...]