If you want an Avy cartridge for your 38mm 888 email Craig at Avalanche. The cartridges fit any fork but require adapters and he's making them in the order of demand. He said that the sooner he gets sufficient emailed demands for the 888 adapters, the sooner they'll be available.
Craig's email: techinfo@avalanchedownhillracing.com
Info on the damper: http://www.avalanchedownhillracing.com/AVA%20Advantage%20Cart%20Kit.htm
Craig's email: techinfo@avalanchedownhillracing.com
Info on the damper: http://www.avalanchedownhillracing.com/AVA%20Advantage%20Cart%20Kit.htm