For use in applications where different sound restrictions apply. Decibel reduction depends on application. Yoshimura optional db killer insert - For use with Alpha / Alpha T silencer. This Yoshimura exhaust is designed to fit model years Aprilia RSV4 APRC|Tuono V4|Tuono V4 APRC|RSV4 2010 2011 2012 2013 2014 2015 2016.
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