ACS 28.6 Threadless Bicycle Headsets
S.H.I.S clamp diameter is the steerer tube diameter.
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ACS Main Drive Headset - Integrated, 1-1/8", Red 
BuyPART NUM 542543
MainDrive Integrated Headsets feature CNC machined alloy tops with 45/45 degree sealed mechanism retainer bearings. Item Specifications S.H.I.S. Stem … read more
20% offretail $24.95 your price $19.99
BuyPART NUM 542543 We define color as the main color of the item. It may have accents or highlights in other colors.
These models are available for online purchasing and can be shipped directly to you.
S.H.I.S clamp diameter is the steerer tube diameter.
S.H.I.S Lower
S.H.I.S Upper
Crown Race
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