Sena Slim Speaker (20S / 20S Evo / 30K) Model_Shinko SR216 FIM Enduro Tyre Precise four-channel vacuum indicator designed

Precise four-channel vacuum indicator designed specifically for intake synchronization of engines with multiple carburettors or throttle bodies (max

Including the classic knurled & piston designs as well as the more unique skulls

Flash Point: 130°C

as well as on multiple diameter tubes

Sena Slim Speaker (20S / 20S Evo / 30K) Model_Shinko SR216 FIM Enduro Tyre Precise four-channel vacuum indicator designedSlim Speakers (20S, 20S EVO, 30K) These slim speakers are compatible with Sena's 20S, 20S EVO and 30K communication systems. They measure just 32mm in diameter with a 7mm thickness and have an output of 20mW, so you can be assured they still provide excellent sound while remaining slim for additional comfort.