Polini have renewed their 47.6mm For Race aluminium cylinder kit. Designed for Piaggio engines and racing, Polini tell us that the displacement increase (permitted by European regulations for track use) significantly improves the following characteristics: pickup, acceleration, sprint, maximum speed and pull at low/medium revs.
The cylinder, cast in light alloy, offers maximum performance even at high operating temperatures while dissipating heat better. The barrel has a 47.6 mm bore with a 'Gilnisil' coating. There are six transfer ports. The exhaust port has a new booster shape that replaces the old W one to optimise the evacuation of combustion gases. The piston, gravity cast at high silicon content light alloy, is fitted with an 'S10' chromed cast iron piston ring. The head, light alloy die-cast, grants a perfect seal and eliminates detonation problems thanks to its perfect squish.
Polini product code: 140.0214
RRP: 189 Euros (+VAT)
100% Made in Italy
For more Polini scooter performance parts, take a look here.
