10-14-17-20 Super Sport gearbox

Quadruple specific for all extremely performing engines that require a close gearbox. Z12-13-16-19 (Third Short and Fourth Short).  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 Special 50 4M, Vespa PK HP 50 V, Vespa Primavera 125, Vespa 90 , Vespa 90 SS, Vespa Nuova 125, Ape 50, Ape 50 Transformation 125, Vespa 50 Elaboration Racing, Vespa 125 Elaboration Turismo, Vespa 125 Elaboration Racing, Ape 50 Elaboration Turismo.