Profile AC-2 Rear Disc Brake Cassette Hub-Black

The Profile AC-2 Rear Disc Brake Cassette Hub-Black features state-of-the-art bearing installation and functionality to deliver superior performance. "AC-2" refers to the angular contact bearings as well as angled bearing cups/hub bores for convenient installation that only requires a pair of snap ring pliers, no special tools needed. This design also means the bearings and cups on each side are lined up perfectly. The AC-2 also features a unique driver with changeable points of engagement so riders can make personalized adjustments. Constructed of high-quality aerospace-grade aluminum for maximum lightweight strength.

FEATURES

• The AC-2 hubs use 20mm Angular Contact bearings with a wave spring pre-load. Bearings are pressed into tapered cups that mate with the angled bores machined into the hub shell. This design feature allows bearing/cup to be easily installed and removed from hub shell without any special tools. No more presses or hammers needed! Another attribute of the tapered bearing cup/angled hub shell bore design is how the bearings seat in the hub. The bearings/cups on each side of the hub shell are in perfect alignment with each other! This ensures superior bearing performance and less chance of premature wear.
• Hub shell and driver literally “float” on the axle. The only force on the bearings is supplied by the wave spring(which delivers the appropriate bearing pre-load needed for angular contact bearings). Tightening of axle bolts has absolutely no affect on the bearings!
• The bearings, wave spring, and shim(s) are secured on the axle by one retaining ring. The only tool used to assemble/disassemble the AC-2 hub is a pair of snap ring pliers!
• The AC-2 hub cassette driver is also unique. It allows for changeable P.O.E.(points of engagement). The hub driver comes standard with 6 pawls and springs. This option offers 96 P.O.E. -Maximum engagement. The other choice is to use just 3 pawls and springs. P.O.E. is reduced to 48 and minimal drag is achieved. This is a rider preference choice and both have a unique sound!
• The proprietary Profile Racing 10 spline aluminum cassette body allows you to use our standard steel, Elite, or aluminum cogs ranging from 12t to 18t.
• The AC-2 BMX hub has a true 20mm bolt-on hollow aluminum axle.
• You have a choice of either 10mm socket head bolt(steel or titanium), 10mm button head bolt(steel or titanium), 15mm adapter with bolt(steel or titanium), or 20mm adapter with bolt(steel or titanium) when ordering your hub. This hub can be used with any standard chromoly, aluminum, or carbon frame.
• The Profile Racing AC-2 hub is manufactured from a high grade, aerospace quality billet aluminum.
• Front and Rear hubs sold separately.
• Ceramic Hybrid bearing option available for hub shell bearings.
• Standard BMX 110mm width.
• ISO Standard 6 bolt disc brake mount.
• AC-2 disc brake adapters available and sold separately (10mm or 15mm).
• RHD only
• 36 Hole
• Made in the USA!