Blue Ox Baseplate 2000-2004 Bonneville Not SSE 4 cm 17-13/16 in :

4 cm  17-13/16 in : 45

and 5th Airborne suspension pin boxes with these style hitchesFeatures: Long box application

An internal sensor measures the amount of deceleration and sends a proportional amount of power to the trailer brakes

Compatible with all Husky custom install kits and X-16 Husky hitches

Blue Ox Baseplate 2000-2004 Bonneville Not SSE 4 cm 17-13/16 in :Blue Ox baseplates are designed to be shock absorbing and integrated into the individual bumper frame or unibody. Created to let the baseplate torsion or flex, similar to a receiver hitch, so it absorbs the forces of towing rather than just transferring the forces to the frame of the towed vehicle. Easy installation with the hardware and easy to read instructions included. Tow bar fastens easily with two pins. Lifetime warranty. Fits 2000 Bonneville