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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 
ACS Maindrive Headset, EC30/25.4|EC30/26 Blue
5 of 5
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5 of 5 stars
( 1 review )
BuyPART NUM 503391
Forged steel cups, alloy tops, and cap with sealed mechanism bearings Available for 1" (25.4mm) or 1-1/8" (28.6mm) EC (traditional cup) applications … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $19.99
BuyPART NUM 503391 
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
Buy this product and your entire order ships for free.
Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.