Highlights

Tune your own engagement
Two settings, two sounds
20mm angular contact bearings
Serviced with snap ring pliers

Description

The Profile AC-2 Hub is Profile's newest hub and has the type of specs that racers crave. For starters, the cassette driver is unique as 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! Use your timing system to tune your hub for the hill you're racing on.

About the Brand

For over 35 years, Profile Racing parts have been the top choice for all types of BMX riding. Profile Racing is the single largest, most capable and most sophisticated manufacturer of high-end BMX bicycle components in the United States.

Features

Tune your own engagement. Six pawls give 96 points of engagement, three pawls give 48 and minimal drag, so you can set the hub up for the hill.
Two settings, two sounds. Both pawl setups have their own unique sound, so the choice comes down to rider preference as much as pickup.
20mm angular contact bearings. A wave spring sets the pre-load, so tightening the axle bolts has no effect at all on how the bearings run.
Serviced with snap ring pliers. Bearings, wave spring and shims are held on the axle by one retaining ring, so no press or hammer is needed.
Bearings that seat true. Tapered cups mate with angled bores in the shell, keeping both sides in alignment for better bearing life.

Specifications

Material: Machined hub shell with angled bearing bores
Bearings: 20mm angular contact with wave spring pre-load
Engagement: 96 P.O.E. with 6 pawls, 48 P.O.E. with 3 pawls
Driver: Cassette with changeable points of engagement
Included: 6 pawls and springs as standard
Note: Due to Profile's anodising process, colours can be slightly mismatched.

Spoke calculator

Display

Pick the part it is laced to and we will give you the lengths to buy.

This hub

Looking up its measurements.

Check or change its figures

Hub spacing locknut to locknut, 100 front or 110 rear on most BMX mm Same both sides front hubs, or matching flanges

Flange diameter/PCD (pitch circle diameter) spoke hole centre to the opposite hole centre. The drive side is the driver side, left or right hand drive alike, and is usually the bigger flange

Drive side mm Non-drive side mm

Flange position

Flange to locknut Centre to flange

Drive side mm Non-drive side mm

Laced to which rim?

Find your rim

Or type its figures

ERD effective rim diameter, from the spec sheet mm