Stronger than OEM design for use with stock Beehive valve springs in conjunction with stock type triple groove valves or single groove valves from AV&V. Kits include 4 valve spring retainers and 4 pairs of AV&V's exclusive POSI-CLAMP retainers which, although using only one groove, clamp the valve above and below all 3 grooves for 55% increase in strength over stock type triple groove brackets. . Fits 2002 and later air-cooled Buells, 2004 to present Sportster and 2005 to 2017 Twin Cam.
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