Spider Billet Aluminum Quick Turn Gas Cap
Made in Italy from billet aluminum.
The 660 series of bikes uses a somewhat deeper gas cap recess than other Aprilia models, so while the bolt pattern is the same as the Shiver and Mille, the mounting posts on the bottom of the gas cap have to be significantly longer to ensure a secure, leak free, gas cap. Spider, thanks to their involvement in the RS660 European Trofeo series, figured this out and designed this gas cap from scratch to fit 100% correctly.