Crankshaft PINASCO 26081951 competition key Stroke 51 Cone 20mm VESPA 50 90 125 LRN SPECIAL ET3 PK XL N PRIMAVERA

51 mm stroke crankshaft specific for Small Pinasco crankcases with interchangeable "unbalancing" inserts. 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, Ape 50. -Main bearings (not included) flywheel side 25-52-15, pinion side 20-52 -15. -Oil seals (not included) flywheel side 20-35-7, pinion side 20-35-7. Range of extremely high-performance crankshafts, dedicated to fast touring and competitions. The PINASCO COMPETIZIONE crankshafts join the classic production and differ in: - higher degree of suction - new fluid dynamics of the suction cut - new racing unbalance obtained with tungsten inserts - innovative Teflon inlays to increase the internal pressure of the crankcases right from the minimums speeds The PINASCO COMPETIZIONE crankshaft significantly increases power and maximum torque starting from low speeds, the number of engine rotation revolutions increases, improving overall performance.