Quattrini 210cc cylinder kit Lambretta S1 + S2 + S3 + SX + DL 125/150/175cc. This is the fantastic, complete Quattrini 210cc cylinder kit for all smallblock Lambretta 125 - 150 - 150 models (i.e. Lambretta S1 LI + S2 + S3 + GP DL + Serveta 125 / 150 / 175). 22bhp out of the box with reedvalve induction (included) and great torque characteristics.