Lower a magnet tied to a string down the pipe, should get it.
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Mods. Yoshi SS pipes, Cox rad guards, R1 tail light, Z1000 mirrors, MRA naked vario touring shield, Heated grips, ECU remapped, Suzuki gel seat, Watsen LED signals, Adjustable lowering links, Cat out, Sato racing engine guards, D.I.Y. running lights.