I put em on Karens bike...id describe it as a tin canny bass echo enhanced note.

Not bad...better than silent stock but not as manly as my Specialty Spares

SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq NEW: 19 Goldwing Tour DCT