Polini 19mm CP carburettorwith manual choke and adapter for the original air filter. When it comes to precision and build-quality, this Made in Italy carb is the finest we stock. Normal sports filters and standard air boxes with 35mm connection can be fitted with the optional air filter adapter. The flow-optimised aluminium construction is on average 40% lighter. Connection diameter intake manifold: 25.5mm connection diameter. Air filter: 34mm. Main Jet: 90. Idle jet: 40. Needle: 14/22