RockShox Domain RC Forks

No, this specific part is designed exclusively for the Domain B1 (2022) model. While the Domain shares the 38mm chassis architecture with the ZEB, the internal threading and specific cap dimensions differ.

You will need a 38mm cassette tool or a dedicated RockShox top cap socket to install this part properly. Using an adjustable wrench or the wrong size socket can easily damage the splines on the cap.

The most common reason is damage to the splines from improper tool use, which makes it difficult to service the fork in the future. You might also need to replace it if the valve cover threads are stripped or if the air seal interface has become compromised.

This kit includes the splined top cap and the valve cover. It does not typically include the internal air spring O-rings, so you should inspect your existing seals and replace them separately if they are worn.

No, this part is strictly for the Domain B1 generation released in 2022 and later. It is not backward compatible with older Domain models that utilized different stanchion diameters or damper systems.