One of Bill Shook’s most important designs is his patented Six Pawl Cam Actuated Engagement System found in our hubs. All six oversized pawls engage in unison whenever drive torque is applied. No other multiple pawl system on the market can ensure that all pawls are engaged at the same time. The cam plate powers the pawls into engagement simultaneously. There are new expanded cupped engagement pockets in the cam plate for improved contact. The secondary ratchet system does the coasting quietly and forces engagement of the large pawls only for drive torque transfer. The
cassette body has 24 ratchet teeth for quick engagement with the pawls. Each pawl is made from super strong tool steel and has double tips for 12 points of engagement to work in conjunction with the 24 ratchet teeth. The one piece forged 7075 aluminum cassette body is hard anodized and is topped with Bill’s latest steel face body design.

»Another new trick bit are that the pawls in
AC's new hub have twice the contact points of most hubs...that each pawl doubles up its teeth. That's a 12 contact point engagement with 6 pawls, making for 3-4 times the contact points as most hubs...«

Charles Manatan, PezCyclingNews.com