We offer a Custom OE WP Cone Cone Valve system for the AER48 Forks. This system uses components directly from a WP “A-Kit” Forks. In addition to this Cone Valve Adaptation system. This system requires the Base Valve Assembly to be altered along with other key tunable areas of this fork design. This complete Cone Valve Adaptation system is $590, and includes no hidden fees, unless the fork needs to be serviced.