The wait is over. We are beyond excited to announce that our highly anticipated SEISMIC Cassette Hub is now available!

The SEISMIC Cassette Hub utilizes a new internal mechanism, which we’ve been working on for the past few years called TCS (Toothed Coupling System). Inspired by systems used on high-end road and mountain bikes, we’ve managed to re-design this system to work inside a BMX cassette hub with a 14mm axle and a 9t driver, something which was never possible until now.

Instead of the typical pawl based cassette hub, the SEISMIC hub uses x2 coupled toothed ratchet rings, which are inside the hub and the driver. The two rings are pushed together with a very special design of spring, which allows the hub to transfer power in one direction, and “freewheel” in the other.

In a nutshell, it’s a much stronger internal mechanism, which can’t fail even after years of heavy use. No more skipping, slipping or popping, you can really crank this thing as hard you want and it’s not going to fail. Even after years of heavy use, this hub was designed to keep going on and on.

Material
6061-T6 alloy hub-shell

Axle
14mm hollow bore, male axle, hardened heat-treated crmo

Bearings
3 high-quality driver bearings, 2 high-performance durable bearings in hub shell.

Spokes
36h

Colors
black, silver polished

Driver
9t

Features

Revolutionary Cassette hub using the patented TCS internal system

low weight, low maintenance hub with super durable internals

Durable and dependable 3-bearing system driver

RSD or LSD available / allen key inner axle for easy maintenance / Includes eclat Viper and Gong nylon-fibreglass hubguards / NEW eclat Chromoly axle nuts

Weight
467g (16.45oz/ 1.03lbs)

Cassette Hubs

Seismic CS Rear Hub

Exile CS Rear Hub

Cortex Evo CS Rear Hub