Highlights

Cassette or freecoaster, your call
Adjustable slack, options A to C
48 points of engagement
Outer driver support bearing

Description

The Z-Coaster is a hub proprietary to Profile: it works as a spring and pawl cassette hub that can be disengaged to run as a freecoaster, with varying slack options through the centre Slack-Cam Ring. It is made in the USA at the Profile factory.

Engagement comes from a Z shaped pawl that the Slack-Cam Ring engages and disengages, with a proprietary coating on the pawls and ratchet ring for smooth pick up. There are 48 points of engagement and all pawls engage at the same time, and an outer support bearing holds the oversized driver from the outside.

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

Cassette or freecoaster, your call. The Z shaped pawl disengages through the centre Slack-Cam Ring, so one hub covers both a cassette and a freecoaster setup.
Adjustable slack, options A to C. Three Slack-Cam Ring options let you set how much slack you get before the drive picks up.
48 points of engagement. All pawls engage simultaneously, so power reaches the wheel without a long wait at the cranks.
Outer driver support bearing. The oversized driver mechanism is supported from the outside, which keeps it steady under load.
Made in the USA. Machined at the Profile factory, with utility and design patents pending on the coaster mechanism.

Specifications

Material: Chromoly axle options, hollow or solid
Engagement: 48 points, all pawls engage simultaneously
Axle: 14mm chromoly (hollow GDH or solid), 3/8 volcano cone or 3/8 titanium
Weight: 585g/20.6oz complete with 9t chromoly 1/8 driver (14mm or 3/8 volcano cone); hollow chromoly 14mm GDH axle 182g/6.4oz; solid chromoly 14mm axle 217g/7.65oz
Note: The freecoaster mechanism only works if the jam nuts are fully tightened for optimum compression. 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