TKR6013 - Shock Adjustment Collars (aluminum, gun metal anodized, 2pcs) is included with the EB48 2.0, EB48 2.1, EB48.2, EB48.3, EB48.4, ET48, ET48 2.0, ET48.3, NB48, NB48 2.0, NB48 2.1, NB48.3, NB48.4, NT48, NT48 2.0 and NT48.3 kits and can be used as a replacement part for those vehicles.