The RockShox SIDLuxe 3P upgrade kit adds a Mid-valve to the shock, creating a genuine third damping state between Open and Lock rather than a compromise setting stuck in between. Pedal firms up the shock for efficient climbing without locking out the suspension completely, giving the rider a dedicated setting for terrain that doesn't call for full Open or full Lock. The kit installs directly on the shock with its own lever, so switching between all three positions happens right at the shock body.