The SEISMIC Cassette Hub utilizes a new internal mechanism called TCS (Toothed Coupling System). Inspired by systems used on high-end road and mountain bikes, but re-design 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 2 coupled toothed ratchet rings, which are inside the hub and the driver. The two rings are pushed together with a very specially-designed 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 won’t fail, even after years of heavy use. No more skipping, slipping or popping, you can really crank this thing as hard you want for as long as you want. This hub was designed to keep going on and on.
6061-T6 aluminum hub shell with high-quality sealed cartridge bearings. 14mm hollow, heat-treated chromoly male axle. Eclat chromoly axle nuts with laser-etched Eclat logos. Chromoly driver with 3 high-quality sealed bearings. 36 hole. Includes 2 durable nylon/fiberglass blend hub guards.
Weight: 16.45 oz