Posted 10.23.26 in Tips & Instructions
Flip one switch in the XKmax app and your Cybertruck's roofline changes jobs. In DRL mode (the daytime running light), the bar runs chasing RGBW color. In Light Bar mode, it throws a driving beam down the trail. The XKmax Roof LED Off-road Light Bar is XKGLOW's only listed Cybertruck light bar, built for the top of the windshield and the truck's 48V power.
It adds light and does not replace the factory lights. XKGLOW's manual wires it to the roof power feed with solder-seal connectors, and XKGLOW sells the beam for off-road use.
The Cybertruck Roof Light Bar at a Glance
| Spec | What XKGLOW lists |
|---|---|
| SKU and price | MX-CTLB, $1,199.99 |
| Modes | DRL mode and Light Bar mode |
| Power | Native 48V input, 300W maximum, no converter |
| Output | 30,102 lumens maximum |
| Build | 304 stainless steel bracket, IP67 waterproof-rated materials |
| Control | XKmax app over Bluetooth |
| Install | Under 1 hour |
| Warranty | See the product page |
DRL Mode and Light Bar Mode on One Cybertruck Light Bar
DRL mode is the show side. XKGLOW lists integrated RGB and pure white LEDs, plus addressable RGB LEDs that run the chasing patterns. The app holds 28 or more pre-built themes, such as Zig Zag, Meteor, Starry Sky, and Chaos, with editable colors, patterns, speed, and brightness, plus a DIY builder. Music and Speed Sync ties the effect to your music, your vehicle speed, or your acceleration.
Light Bar mode is the driving side, and no other XKGLOW Cybertruck kit throws a beam. XKGLOW's page calls it superbright, with wide, long-range illumination for rugged terrain.
The mode switch sits at the top of the XKmax app screen and in the device list. The bar powers up in DRL mode, and you can change that default under Config, then Default Mode. The truck's screen switches the roof power feed on, and modes, colors, and themes happen in the app.
Power: One 400W Feed, One 300W Bar
Tesla's manual puts one of the Cybertruck's two accessory power feeds on the roof, rated at 400W maximum draw. XKGLOW's manual connects the bar to that feed, and the bar's listed maximum is 300W. That leaves 100W of headroom if nothing else shares the feed. No converter sits in between, because the input is native 48V.
XKGLOW's Cybertruck underglow kit wires to the frunk feed instead, so each kit gets its own. Tesla adds that the feeds stop providing power by default when you exit and close the doors, unless you touch Keep Outlets On. Leaving an accessory powered also depletes the high voltage battery.
Fit and Install: What XKGLOW's Manual Says
XKGLOW's page says 2025 and newer Cybertrucks may need two Tesla parts if the truck did not ship with the factory options, so check your build date. The parts are the Roof Applique for Crossbars and the Roof Accessory Jumper Harness (Tesla part 1866224-00-F). Tesla's manual says trucks built after approximately April 2025 are not equipped with a harness on the roof power feed. Tesla's shop lists the applique at $150 and says it comes with the Cyberbeast and 2023-2024 All-Wheel Drive trucks.
XKGLOW lists the install at under an hour, and the manual calls for a heat gun. The manual's steps:
- Flip up the two small roof plates closest to the windshield. The passenger-side plate exposes the truck's 48V wires.
- Join the supplied pigtail harness to the red and black wires with the solder-seal heat-shrink connectors.
- Plug in the bar, switch on Power Feed, Roof under Outlets and Mods, and test it before mounting.
- Bolt the brackets to the bar, thread the supplied 30mm extended nuts onto the exposed roof threads, and seat the bar near the top of the windshield on its rubber spacer.
- Loosen the rear nut on each side to tilt the beam down, center the bar, tighten the M5 and M6 bolts, and tape the small controller inside the passenger-side bracket.
XKGLOW recommends a licensed professional, says it assumes no liability for the install, and links its dealer locator from the product page under Need Install Help. Tesla says only knowledgeable, experienced people should tap a power feed, and its warranty excludes damage from non-approved parts or modifications.
Road Use: Treat Light Bar Mode as an Off-Road Beam
The product page gives no road-legal rating for the beam, and the manual says to check your local and state laws. Tesla's own bar carries a firmer note: its listing says the bar is intended for off-road use only and that public-road use may violate federal, state, or local laws.
Color and chase patterns raise the same question, so check your state's rules before you drive with them on. One owner's review says the app does not always show what is active in DRL mode, so confirm the mode and theme before you pull onto a public road.
What Owners Report After Installing It
On October 1, 2026, the product page showed nine reviews averaging 4.7 stars: six at five stars and three at four. Owners praise the brightness and the fit against the windshield, and one puts the install at 10 to 15 minutes. The four-star reviews hold the caveats:
- One says the DRL is not very bright in daylight, even at 100 percent.
- Two find the Allen mounting bolts a pain to tighten, and one would rather have Torx.
- One reports the bar staying lit after locking the truck. Tesla's default is to cut the feeds when you leave, so check your Keep Outlets On setting.
- One wishes the bar integrated with the truck's own controls.
Price, Warranty, and Tesla's Own Bar
XKGLOW lists the roof light bar at $1,199.99, the second-highest price among its five Cybertruck kits. Tesla lists its own Cybertruck Off-Road Light Bar at $1,950, and it showed as out of stock on October 1, 2026. XKGLOW's universal XKmax LED Light Bar for trucks, Jeeps, and UTVs comes in six sizes, but its page never mentions the Cybertruck or 48V, so confirm fit with XKGLOW first.
Check the product page for the bar's warranty terms, and register the bar to activate coverage. XKGLOW's warranty page excludes improper installation and improper wiring, so wire it exactly as the manual shows.
Who Should Buy the Roof Light Bar
Buy this Cybertruck light bar if you want one bar that shows color at a meet and lights a trail, and you are happy to run it from your phone. Expect to splice the roof feed yourself or pay a shop to. Skip it if you want a beam you can run on public roads without checking local rules, or controls built into the truck's screen.
If the bar is your first piece, the complete Cybertruck lighting guide shows how it fits with the other four XKGLOW kits. Build yours today.
Frequently Asked Questions
Is the XKGLOW Cybertruck roof light bar the same as Tesla's OEM light bar?
No. Tesla sells its own Cybertruck Off-Road Light Bar, which it listed at $1,950 when we checked. XKGLOW's bar is a separate product at $1,199.99, with an RGBW chasing DRL mode, XKmax app control, and a native 48V input. Tesla's listing describes touchscreen control instead.
How much does it cost to put the roof light bar on a Cybertruck?
XKGLOW lists the bar at $1,199.99. If your truck lacks the roof applique, Tesla's shop lists one at $150, and the jumper harness is a separate Tesla part. Budget separately for a shop if you would rather not solder the roof feed yourself.
Is the XKGLOW Cybertruck light bar an off-road light bar?
Yes. XKGLOW sells it as an off-road bar, and its page gives no road-legal rating for the beam. The manual says to check your local and state laws for proper use. Treat Light Bar mode as an off-road beam until you have checked your state's rules.
How long does the Cybertruck roof light bar take to install?
XKGLOW lists under an hour, and one owner's review reports 10 to 15 minutes. The manual's steps include soldering a harness to the roof power feed with a heat gun, and XKGLOW recommends a licensed professional. Check your build date first, since 2025 and newer trucks may need two Tesla parts.
Is the XKGLOW Cybertruck light bar RGB or RGBW?
RGBW. XKGLOW's product title calls the DRL RGBW, and the page lists integrated RGB and pure white LEDs, with addressable RGB LEDs running the chasing patterns. The XKmax app adds 28 or more pre-built themes, editable colors and speeds, and a DIY builder.
