decompression kit for Piaggio engines 125-200cc w/ big bore cylinder (old type cylinder head)

Decompression kit for the protection of the starter motor when the cylinder capacity is increased while continuing to use the original cylinder head.

With the use of a Big Bore cylinder, however, the compression ratio also increases if the original cylinder head is still used. The starting process of the engine with E-Start or Kick-Start is clearly made more difficult. We therefore recommend in any case the use of our decompression kits in order to conserve battery, starter motor and kick start mechanism.

The installation of this kit additionally requires the use of the Malossi camshaft M.5911962 or the OEM camshaft PI-8459345.

This kit is suitable if your vehicle has the older version of the Piaggio cylinder head (rocker arm with slide shoe). Mostly built until 2014, but also longer. When mounting the Malossi cylinder head M.3813273 no decompression kit is required.

The following vehicles must be checked for the design of the rocker arms. All unlisted models can safely install this kit without checking the rocker arms before:

Gilera Runner 125 ST 4T 4V LC 14-16 E3 [ZAPM46301]

Piaggio Beverly 125 ie 4V RST 13-15 [ZAPM69100]

Piaggio X Evo 125 4V 13-16 [ZAPM36601]

Piaggio X10 125 ie 4V 13-15 [ZAPM76101/ 76100]

Vespa GTS 125 ie Super 4V E3 14-16 [ZAPM4530]