Made of high-strength die-cast steel, the new Pinasco crankcases for the Vespa Small Frame redefine the limits of the category. Designed to accommodate the innovative PINASCO 8X 8-petal reed valve intake system, the support surface features a specific flange that accommodates the Pinasco 251cc cylinder kit or, alternatively, other 200cc units currently available on the market.

The internal architecture has been completely redesigned to handle heavy stress: the kit features a larger crankshaft with 98mm shoulders and oversized main bearings, essential for ensuring reliability and stability under the significant increase in torque. The crankcase structure has been meticulously reinforced with ribs at the maximum load points and introduces, for the first time ever in the Vespa world, the exclusive PINASCO REMOVABLE GEAR SYSTEM. The gear selector offers two standard configurations: a roller cage with dedicated oil seal or a high-precision brass bushing.

The kit includes:

Engine crankcase with 8X reed valve intake and removable manifold.

251cc cylinder kit with 73mm Wössner forged piston.

High-strength splined crankshaft.

8X reed valve stack and complete assembly hardware.

Despite its top-notch performance, the power delivery has been designed to keep the engine smooth, flexible, and enjoyable during dynamic use. The kit has been engineered to be installed without any modifications to the chassis, preserving the integrity and value of the original vehicle.

Applications: Vespa ETS 125,Vespa ET3 125,Vespa PK 125,Vespa PK 50,Vespa PK HP 50,Vespa PK XL 125,Vespa PK XL 50,Vespa 50 N,Vespa 50 L,Vespa 50 R,Vespa Special 50 4M,Vespa Special 50 3M,Vespa PK HP 50 V, Vespa Primavera 125, Vespa 90, Vespa 90 SS, Vespa Nuova 125.