DT Swiss EXP Upgrade Kit

This kit is compatible with DT Swiss hubs that utilize the Star Ratchet system. However, it is specifically designed for the EXP version of the hub internals, so it will not fit older non-EXP Star Ratchet hubs.

Increasing your engagement points from the standard 18 or 36 to 54 significantly reduces the 'dead zone' when you start pedaling. This results in near-instant power transfer, which is particularly noticeable during technical climbs or when accelerating out of corners.

If you are comfortable performing basic drivetrain maintenance, you can install this yourself. You will need the specific DT Swiss ring nut tool to remove the existing threaded ring, but the rest of the installation is straightforward and requires no special tools.

The kit includes the two 54-tooth star ratchets and the necessary springs. It does not include the specialized ring nut tool required to remove the old drive ring, so you will need to source that separately if you do not already own one.

Yes, generally speaking. Because the ratchets engage more frequently and with different spring tension, the freehub will have a distinct, higher-pitched buzz when coasting compared to the standard, lower-engagement ratchets.