Goldwing riders rejoice. Technically the same features as the 440 series, the 450 series is designed specifically for the GL1500 Goldwing. It features a Progressive Rate spring, Inertia Sensitive / Velocity Sensitive Damping and is used in conjunction with the stock air shock. The 450 series I.A.S.® shock provides the ultimate ride for your 1500 Goldwing.