DRCV (Dual Rate Control Valve) suspension products are not compatible with ShockWiz
Exclusively on TREK Bikes - Suspension forks and rear shocks that feature the DRCV designation CANNOT be used with ShockWiz. During a specific point in compression, a valve within the air-spring is opened, which alters the air volume of the positive air spring and changing its compression ratio.
Coil sprung forks/shocks are not compatible with ShockWiz
ShockWiz CANNOT be used with ANY coil-sprung suspension fork or shock.