Trac Bar Lights: What They Are and Where They Go

Rock lights and wheel lights get all the attention. Trac bar lights are the ones people notice on someone else's truck and cannot identify — so here is the plain explanation.

What a trac bar light actually is

A trac bar (or track bar) is the lateral link that stops your axle moving side to side under load. On a lifted truck it sits low, spans the width underneath, and is one of the few pieces of suspension you can see clearly from the side.

A trac bar light is a lighting strip mounted along it. Because the bar runs across the truck rather than down its length, the light throws sideways and down — lighting the axle, the inside of the wheels and the ground between them.

Why it looks different to rock lights

Rock lights point down and pool light on the ground. A trac bar light sits higher and lights the suspension itself, so the running gear reads as lit rather than as a dark mass above a glow. On a lifted truck, that gap between the body and the ground is the thing people notice — and it is exactly what a trac bar light fills.

They are not a replacement for underglow. They are what makes underglow look finished on a truck with lift.

Do you need a lift to run them?

No, but they suit lifted trucks better. On a stock-height truck the trac bar sits close to the axle and the effect is subtle. Once there is meaningful lift, the bar is visible from the side and the lighting has somewhere to throw.

If your truck is lifted and you already run rock lights, this is the most obvious thing missing.

Two versions

• Pure White — the same pure white as the rest of our range, in standard or high intensity. No blue cast, no yellow cast, and it matches rock and wheel lights on the same truck.
• Switchback with startup animation — runs a sequence when you start the truck, then settles. If you show the truck, this is the one people film.

Mixing colour temperatures across a build is the fastest way to make an expensive setup look cheap. If you already run our pure white elsewhere, run pure white here.

Installation

Straightforward: the strip mounts along the bar and wires into the same harness as your other lighting. There is no separate controller and nothing to pair. Route away from the axle's travel and leave slack — the trac bar moves with the suspension, and a taut wire there will not survive.

Our installation guides cover the wiring in full.

Covered by our limited lifetime warranty when installed to the instructions and registered.

See the trac bar lights → Free US shipping, ships in 1–3 business days.