1mm wedge for cylinder base. High quality machined aluminum. Made in LUXEMBOURG for RRD . Original shape to be adaptable to all MOTOBECANE AV7 cylinders. Allows the increase of the diagrams for the installation of long stroke crankshafts (in combination with base gaskets).
Also allows to correct the defect of the PARMAKIT cylinders which are delivered too low! Made in small series in quality materials, which explains the slightly high price for this small piece.
Ideal to accompany a push configuration, 70cc or more! Specially designed for MBK MAGNUM and other machines that require a left step. Left-hand thread (reverse)!