Aprilia SX 50 2011 M7 / 110mm Cylinder Head Stud & Nut Set. Aprilia SX 50 11-13 M7 / 110mm Cylinder Head Stud & Nut Set. Aprilia SX 50 Factory 18-20 M7 / 110mm Cylinder Head Stud & Nut Set. Aprilia RX 50 Factory 18-20 M7 / 110mm Cylinder Head Stud & Nut Set.
