ITALIAN specialist Polini continues to improve the line-up of small cc performance race and street options available for dealers.
Their new Evolution 2 kit for the 125cc Vespa Primavera ET3 for track use by those running in the 135cc Vespa category features cylinders that work in the original and developed muffler-friendly turned orientation favoured by many in race applications.
Featuring rotary valve induction, the kit can be fitted to all 125cc Vespa models using a crankshaft with OE measurements or the Polini balanced solid-block milled con-rod crankshaft with the original 51mm stroke.
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| Polini's race-only Evolution-2 kit cast cylinder has a Nickel-Siliceous coated liner and gives Vespa's 125cc engine a 135cc displacement with stock 51mm stroke and 58mm bore. The gravity cast light alloy piston has two chromed cast iron rings; the head is a one-piece cast design with cooling fins |
The Nickel-Siliceous coated lined cast aluminium cylinder has a 58mm bore for a 135cc displacement. There are 6 race-style transfer ports, two chromed cast iron piston rings for the gravity, cast light alloy piston and a cooling-finned one-piece cast aluminium cylinder head.
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| Polini's Maxi Hi Speed Variator for Honda Forza 125s features many design and performance refinements that reduce service costs and improve durability; can be adapted for SH 125-150 applications |
Polini's award-winning Maxi Hi Speed Variator is now available in a version for the Honda Forza 125 that can be adapted for SH 125-150 applications which features many new design improvements.
Among them are a new polishing treatment to further reduce roller sliding surface friction; a case-hardened chromed nickel-steel tempered and ground bush and a large internal grease reservoir with springed-pin distribution. A compression spring is available that is said to be 10 percent less hard than the OE item for increased starting rpms.
Polini say that these changes produce reliable, constant and consistent performance without engine efficiency roller calibration and reduce service costs and improve durability.
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| CP carburettor of Vespa 50 rigid connection, supplied with air-box with upgraded intake |
Also seen here Polini's CP carburettors for Vespa 50cc 16.16 manifold rigid connection, which are 100 percent made in Italy, being designed, developed and produced by the company at its Bergamo factory.
Using a clamp, they are supplied with air-box with upgraded 17.5 mm diameter intake and a short inlet pipe with an exclusive concentric design and a geometry that is said to optimise air flow.
POLINI MOTORI SPA
www.polini.com
