AC-2 describes the use of both angular contact bearings and angled bearing cups/hub bores used in the hub design. This hub features revolutionary bearing installation and function never seen before in a bicycle hub. It has been designed from the ground up for ease of maintenance and optimal bearing performance. The AC-2 also offers changeable pawl/spring configurations for varying points of driver engagement to suit a rider’s personal preference.
Here are a few key points of the AC-2 BMX Disc Brake Cassette Hub:
-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!
*Profile Racing does offer a simple tool to aid in retaining ring installation and bearing/cup removal, but is not necessarily needed.*
-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(steel or titanium), 10mm button head(steel or titanium), 15mm alum, or 20mm alum bolts 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.
- 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
- Made in the USA!
- Spoke Holes: 36h
- Bearings: Steel 20mm angular contact, Ceramic Hybrid 20mm angular contact
Weight: 355g/12.51 oz (weighed w/15mm bolts & no cog)
Fast Shipping and Professional Packing
Because of our long-standing partnership in a long-standing partnership with UPS, FedEx, DHL and a variety of other top global carriers we can offer an array of shipping options. Our warehouse staff is highly trained and will be able to pack the items according to the exact and precise specifications. Your items will undergo an extensive inspection and will be adequately secured before being shipped. We deliver to hundreds of thousands of customers daily across different countries. This shows our commitment to becoming the largest online retailer in the world. These warehouses are in Europe just as they are in USA.
Note: Orders containing more than one item will be assigned a separate processing period for each item.
Prior to shipment Our team will conduct an extensive inspection of the products you ordered. The majority of orders will be delivered within 48 hours. The delivery time is between 3 and 7 working days.
Returns
Due to multiple entities such as the factory and the warehouse, we're unable to effectively manage inventory. The stock can change at any time. It is possible that you will not receive your order after it has been placed.
Our policy is for 30 days. If it's been more 30 days since you made your purchase, we unfortunately can't give you a complete refund or exchange.
Your item should be in its original packaging and be unused. It should also be returned in its original packaging.
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