Custom Bumpers and Racks for Eastvale, California

A rear bumper that will carry weight has to transfer that weight into the frame rails, not into the sheet metal skirt around it. On travel trailers and fifth wheels that means welding or bolting a heavier tube to brackets that run forward along the rails for a meaningful distance and tie into more than one crossmember. On motorhome chassis it means working with the existing frame extension and reinforcing where the original design assumed nothing would be hanging off the back.

Receiver hitches follow the same logic and add rating considerations. A receiver welded to a bumper tube has the strength of that tube and its mounts, regardless of what the receiver itself is rated for. We build the mount to carry the intended tongue weight, state what the assembly is designed for, and refuse to install a receiver on structure that cannot support the load an owner describes. Saying no to that request is part of doing the job correctly.

Rear cargo platforms create the most leverage of anything owners commonly add, because weight hanging behind the rear axle multiplies through a long overhang. A hundred pounds at the tail of a thirty foot coach behaves like considerably more at the mounting point, and it also unloads the front axle enough to change steering feel. We calculate the effect, discuss it honestly, and sometimes recommend moving the load somewhere else entirely.

Generator trays and slide out platforms add complexity because they need to lock in transit and move reliably on demand. Linear slides sized for the load, positive latches at both extremes, and stops that prevent the tray from leaving the rails are all part of a build that stays safe. Weight distribution and access clearance get checked with the tray extended and the vehicle level, since a tray that only works on flat ground is a design that failed.

Roof racks are common on van conversions, skoolies and expedition style builds, and every mount is a hole in a roof. On a metal roof the fastener can land in structure and be sealed conventionally. On a coach with a membrane roof over thin decking, backing plates inside the cavity are required, and the sealing method has to be compatible with the membrane material rather than whatever tube is nearby. Getting that wrong produces a leak that shows up two seasons later.

Track systems that bolt through existing rain gutters or roof rails avoid new penetrations entirely on vehicles equipped for them, and that is the preferred approach when it is available. Where penetration is unavoidable, we use a proper mounting boss bedded in sealant, seal the fastener heads with a compatible lap product, and photograph each penetration before it is covered so there is a record of how it was built.

Bare welded steel on the back of a vehicle that sees coastal air will show rust within a season. Fabricated assemblies get media blasted or mechanically prepared, primed with an appropriate epoxy or etch primer, and topcoated. Where the customer prefers it, powder coating gives a harder finish that resists chips from road debris better than a wet coating, at the cost of needing the assembly complete before finishing since welding after coating destroys it locally.

Dissimilar metal contact deserves attention on any aluminum work. Aluminum bolted directly to steel in the presence of road salt or coastal moisture corrodes at the interface, sometimes aggressively. Isolating washers, coatings and correct fastener selection prevent it. Drain holes go in any closed section that could trap water, because a sealed tube that fills with condensation rusts from the inside out and gives no warning until it fails.