Sometimes you want the old fashioned "Rumble Sound" in your Harley and sometimes you don't. These adjustable end caps make this possible. By loosening the lock screw on the end cap you can open up your exhaust with the small handle, allowing a straight thru flow. Cap is CNC machined from billet aluminum and has a high luster polished finish. Comes complete with Allen key for the lock screw. Fit all SuperTrapp 4" external disc exhausts. Sold each.
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