Profile

Profile AC-2 Race Cassette Hub

Sale price Price £303.01 Regular price £370.99

ALL RACE AC-2 CASSETTE HUBS REQUIRE A COG AND BOLTS TO BE ADDED TO YOUR ORDER. WE WILL NOT SUPPLY THE HUB WITHOUT THIS BEING ADDED TO THE BASKET.

ADD AC-2 FEMALE 10MM BOLTS OR AC-2 FEMALE 15/20MM BOLTS TO COMPLETE HUB ORDER

ADD COG TO COMPLETE HUB ORDER

TOTAL Cost is £216.26 (Price with bolts and cog)

TOTAL Retail is £370.99 (Price with bolts and cog)

Overview

“AC-2” = Dual Angular Contact. This describes the use of both angular contact bearings and angled bearing cups/hub bores used in the hub design.

The AC-2 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 Cassette Hub 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 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!

-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 Profile's standard steel, Elite, or aluminum cogs ranging from 12t to 18t.

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Product Specs
  1. HUB TYPE: Cassette
  2. AXLE: Female Bolts
  3. DRIVER: Choose In Basket
  4. SPOKE HOLES: 36h
  5. WEIGHT: 370g / 13.05oz