Build your own swing-out tire carrier or rear bumper system with the complete swing out hinge kit, engineered for strength, smooth operation, and long-lasting reliability. Unlike cheap trailer bearing kits, this design uses COM16 uniballs and O-ring sealing to deliver low-maintenance performance built to handle real off-road abuse. Complete Kit Includes (1) CNC-machined steel hinge barrel (2) Aluminum misalign spacers (2) COM16 uniballs (2) O-rings (1) Set of ¾” Grade 8 hardware Rebuild Kit Includes (2) COM16 uniballs (2) O-rings Technical Specs Overall height: ~4.5” Outside diameter: 2.25” Low-maintenance design with sealed uniballs and O-ring protection Why the Hinge Kit? Uniball-Based Design – Stronger and smoother than trailer bearing alternatives. Weather Sealed – O-rings are sandwiched between the steel housing and aluminum spacers, keeping out water, dirt, and grime. Smooth Operation – A light coat of grease along the O-rings ensures quiet, reliable movement over time. DIY Friendly – Perfect for fabricators building custom swing-out bumpers or carriers. This hinge kit is the ultimate solution for swing-out bumper builds, giving you strength, durability, and maintenance-free performance where it matters most.
