Vespa PX T5 V50 Prim PK GS160 Super Rally SIP Performance 2.0 Rear Shock - Black
Vespa PX PE T5 V50-125 Prim ET3 PK50-125 GS160 Super Sprint Rally SIP Performance 2.0 Rear Shock - Black. The SIP shockabsorbers have received official type-approval. The shockabsorbers got the German KBA numbers.