Polini 125/150 cc 4-stroke performance upgrades
Available for Vespa 125 and 150 4-strokes and Piaggio Liberty 125 and 150 Euro 5 models, this new Ø63 cylinder kit by Polini Motori has been developed to deliver added power to Vespa 125 and 150 cc 4-strokes.
The displacement has been increased to 182 cc for faster response, crisper pick-up and increased performance. Made in die cast aluminium with nickel silicon carbide coating ('nikasil'), it has a die-cast piston with chromed rings and a 11.5:1 compression ratio (part# 140.0235).
To achieve the proper carburetion setting, it is necessary to install the new Euro 5-specific Polini ECU for Vespa 125 and 150 4-strokes (# 171.0018 - also seen here) together with the cylinder kit.
The Polini ECU for Vespa 125 and 150 4-strokes and Piaggio Liberty 125 and 150 Euro 5 is a "state-of-the-art, programmable control unit designed to control the amount of fuel pumped into the cylinder by modifying the injection timing.
"It fits perfectly on all scooters with the appropriate wiring harnesses connected directly to the original injector. This control unit has been created specifically to make modification of fuel injection systems on tuned 4-stroke scooters much easier - in some cases a new unit is the only way to be able to use aftermarket replacement, OEM upgrade or performance parts.
"Programming the Polini ECU is very simple. There are two maps already configured. Dealers and users can choose from map 1 for a Polini cylinder kit with original muffler, or map 2 for a Polini cylinder kit with Polini muffler.
Finally, and speaking of Polini mufflers, seen here (#190.0081 and #190.0081/K - catalytic), this new Euro 5 homologated muffler is designed for Vespa Euro 5 GTS 125 and GTS-Super 4-stroke 4-valve models - and is available with or without catalyser.
Said to be an easy install, it is very light - weighing in at 3 kg less than the OE muffler. The increased power it produces is noticeable - improving response and pick-up. It has an aluminium body and carbon-look end cap. It is described as delivering a "gritty" but legal sound thanks to the packing material used. All these Polini products are fully Made-in-Italy.
POLINI MOTORI SPA
