Baja Designs OnX6 Arc 40-Inch Curved LED Light Bar | Driving/Combo | Universal | SKU: 524003
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
The Baja Designs OnX6 Arc (524003) is a 40-inch curved LED light bar in a driving/combo optic pattern. The Arc designation indicates a curved bar profile — distinct from all straight Baja Designs bars. The curved profile is designed for mounting positions where the bar follows a vehicle's roofline, windshield frame, or bumper contour, providing a more integrated, lower-profile appearance than a straight bar in those positions. Where a straight bar would protrude above the roofline or sit flush against a curved mounting surface, the Arc profile fits the contour.
This is not a straight bar. Straight bar mounts are not compatible with the Arc curved profile. Confirm your mounting location accommodates the OnX6 Arc curved profile and that your brackets are Arc-compatible before ordering. Text (469) 407-7538 to confirm the correct bracket and harness PN for your application before purchasing.
The driving/combo pattern delivers long-range forward projection with lateral spread — balanced output for trail, desert, and road applications where both distance and peripheral coverage matter.
Universal mount. No brackets included. Wiring harness sold separately and required.
Component Specifications
| Component | Specification |
|---|---|
| SKU | 524003 |
| Brand | Baja Designs |
| Series | OnX6 Arc — curved light bar |
| Length | 40 inches — curved profile |
| Beam Pattern | Driving/Combo — long-range forward throw + lateral spread |
| IP Rating | IP69K — waterproof, dust-tight, pressure-wash rated |
| Weight | 15 lbs |
| Mount | Universal — Arc-compatible brackets sold separately, required |
| Wiring Harness | Sold separately — text (469) 407-7538 to confirm correct PN |
| Fuel Type | Universal — no vehicle restriction |
| Application | Universal — windshield frame, roofline, curved bumper bar positions |
What Is and Is NOT Included
| Included | Not Included |
|---|---|
| OnX6 Arc 40-inch curved LED light bar | Arc-compatible mounting brackets — required, sold separately |
| Wiring harness — required, sold separately | |
| Vehicle-specific adapters |
Critical Compatibility
The Arc curved profile requires Arc-compatible brackets. Straight bar mounts will not correctly seat the Arc curved profile. Before ordering, confirm your brackets are designed for the OnX6 Arc curvature and that your mounting location physically accommodates a 40-inch curved bar profile.
| Configuration | Compatibility |
|---|---|
| Windshield frame, roofline, or curved bumper position — Arc-compatible brackets confirmed | ✅ Correct application for curved profile |
| Straight bar mounts — any brand or style | ❌ Not compatible — Arc curved profile will not correctly seat in straight bar mounts |
| Flat roof rack or chase rack requiring a straight profile | ❌ Use-case mismatch — see S8 40-inch straight variants (704003 clear / 704013 amber) |
| Mounting location under 40 inches in width | ❌ Confirm mounting location accommodates full 40-inch curved bar length before ordering |
| Mount not structurally rated for 15 lbs at speed | ❌ Verify structural rating before ordering |
| Factory wiring without relay harness | ❌ Not compatible — relay harness required, sold separately |
| On-road use in jurisdictions restricting auxiliary lighting | ❌ Verify compliance with your state DMV or DOT before road use |
Bracket or harness question before you order? Text (469) 407-7538.
Arc Curved vs. Straight Bar — Which Do You Need?
| OnX6 Arc — 524003 | S8 Straight Clear — 704003 | S8 Straight Amber — 704013 | |
|---|---|---|---|
| Profile | Curved — 40 inches | Straight — 40 inches | Straight — 40 inches |
| Best For | Roofline, windshield frame, curved bumper positions | Flat roof rack, chase rack, flat bumper bar | Flat mount — dust, fog, desert environments |
| Lens | Clear | Clear | Amber — full scatter control |
| Weight | 15 lbs | 13 lbs | 13 lbs |
| Brackets | Arc-compatible required | Standard straight bar | Standard straight bar |
Installation Notes
Curved profile confirmation is mandatory before ordering. The OnX6 Arc uses a curved bar profile that is not interchangeable with straight bar mounts. Confirm your mounting location physically accommodates the Arc curvature and 40-inch bar length. Measure your windshield frame, roofline, or bumper bar opening before purchasing — a 40-inch curved bar cannot be returned once mounting holes are drilled.
Arc-compatible brackets are required and not included. Straight bar brackets will not correctly seat the Arc profile. Order Arc-compatible universal or vehicle-specific mounting brackets separately. Text (469) 407-7538 to confirm the correct bracket for your mounting position before ordering.
Relay harness is required before any wiring. The OnX6 Arc draws more current than factory switch circuits are rated to handle. A relay harness rated for the OnX6 Arc current draw must be purchased and installed before the bar connects to any power source. Text (469) 407-7538 to confirm the correct harness PN for the Arc 40-inch bar before ordering.
Mount structural rating. At 15 lbs, confirm your windshield frame mount, roofline mount, or bumper bar is structurally rated for the OnX6 Arc load and vibration forces at speed.
Aim before final torque. Set bar angle at your intended aim point before fully torquing mount hardware.
Connector sealing. Fully seat and weatherproof all wiring connectors after installation. IP69K rating applies to the bar housing — connector integrity is installer responsibility.
Road legality. Auxiliary lighting regulations vary by state. Verify compliance with your state DMV or DOT before on-road use.
Text (469) 407-7538 to confirm Arc bracket compatibility and harness PN before ordering.
The Obsidian Take
The OnX6 Arc is the correct bar for the builder whose mounting position follows a curve — windshield frame, roofline contour, or curved bumper bar — where a straight bar would either protrude above the profile or sit unevenly against the mounting surface. The Arc profile follows the contour, sits lower, and integrates cleaner than any straight bar in those positions. Driving/combo pattern, IP69K construction, 40 inches of curved output — built for the mount that a straight bar cannot fill correctly.
If your mounting surface is flat — roof rack, chase rack, flat bumper bar — the Arc is the wrong profile. Run the S8 40-inch straight in the correct lens for your environment: 704003 for clear-condition maximum output, 704013 for dust, fog, and desert where full amber output is the priority.
The single most common misorder on this SKU is a buyer who did not confirm bracket compatibility with the Arc curvature before purchasing. Arc-compatible brackets and a rated relay harness are non-negotiable prerequisites — get both confirmed before the order ships.
The OnX6 Arc earns its place on the build where the roofline has a curve and the lighting needs to match it.
Common Questions
What is the difference between the OnX6 Arc and the S8 straight bars?
The OnX6 Arc (524003) uses a curved bar profile designed for windshield frame, roofline, and curved bumper positions. The S8 40-inch straight bars (704003 clear / 704013 amber) use a flat profile for roof racks, chase racks, and flat bumper bars. The profiles are not interchangeable — brackets for one will not correctly seat the other.
Can I use my existing straight bar brackets with the Arc?
No. Straight bar mounts will not correctly seat the OnX6 Arc curved profile. Arc-compatible brackets are required. Text (469) 407-7538 to confirm the correct Arc bracket for your mounting position.
What harness do I need?
Harness PN depends on your vehicle and wiring configuration. Text (469) 407-7538 with your vehicle and mounting location to confirm the correct harness before ordering.
Will this fit my roof rack?
Depends on the rack. If your roof rack has a flat straight mounting surface, the S8 straight bar is the correct profile. If your roof rack follows a curved roofline, the Arc may be the correct fit — confirm with (469) 407-7538 before ordering.
Is auxiliary lighting legal on public roads?
Auxiliary lighting regulations vary by state. Verify compliance with your state DMV or DOT before on-road use.
Verified Fitment
Universal mount application. Compatible with any vehicle, truck, or equipment with a mounting solution that accommodates the OnX6 Arc 40-inch curved bar profile. Arc-compatible bracket selection, mount structural rating, and wiring harness compatibility are buyer's responsibility.
Manufacturer Data Disclaimer: Specifications sourced from Baja Designs product documentation and authorized distributor data. Obsidian Forged Auto Supply is an authorized Baja Designs dealer. Manufacturer specifications are subject to change without notice.
⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information visit P65Warnings.ca.gov.
⚠️ Non-Returnable Notice: Electrical components that have been wired or powered are non-returnable. Confirm bracket and harness compatibility before installation.