Genuine Aprilia saddle lock with two keys for, SR50 "97-'00, Pegaso '97-'00, '98-'04 Scarabeo.
Genuine Aprilia saddle lock with two keys for, SR50 "97-'00, Pegaso '97-'00, '98-'04 Scarabeo (including Ditech).
Aprilia part no. 8201564
Part no 4 in the diagram (SR50 Model shown)