The BBS PFS kit for Subaru is a vehicle-specific fitment kit that supplies the hub ring and retaining clip needed to adapt BBS wheels to Subaru hubs; this listing notes the clip is included. It includes a 70mm outer-diameter ring with a 56mm inner diameter and a 70mm clip, all intended to promote proper seating and support correct alignment when wheels are mounted.
BBS PFS KIT - Subaru - Includes 70mm OD - 56mm ID Ring / 70mm Clip