Manufacturer images show example configurations. Optics and emitter colors may differ from your selection. Black chassis and black bezel rings are standard; ask about custom bezel-ring colors.
CHECK YOUR FIT21.5″ W × 2.5″ H × 3″ D20-INCH / LIGHT BARS
Z8i UHO
20-inch Ultra-High Output lighting with an adjustable white-to-color mix, modular optics and individual emitter control.
Published maximums. Output and power vary with settings and operating conditions.
$1,540 USD
CONFIGURE YOUR LIGHTReview your selected configuration in your bag before secure checkout.
Plan your wiringZ8i UHO selected · wire sizing, fuses & printable checklistInstallation guide Compare Z8i UHO with other brands03 KNOW WHAT GOES INTO YOUR BUILD
Specifications & details.
The published specifications for Z8i UHO. Use the actual dimensions and electrical requirements to plan your installation.
WIDTH × HEIGHT × DEPTH21.5 × 2.5 × 3 IN
Technical specifications
- Maximum published lumens
- 40,936
- Maximum power
- 464 W
- Maximum current at 12 V
- 38.6 A
- Input voltage
- 9–16 VDC
- Width × height × depth
- 21.5 × 2.5 × 3 in
- Weight
- 8.2 lb
- Platform
- Zenith UHO
Manufacturer-published specifications. Actual power draw and luminosity depend on output settings and environmental conditions. View source specifications ↗
Engineering & control
- Dual-color output
- Individual emitter dimming
- 8-node RGBW backlight
- Active 8-zone thermal management
- Secondary thermal shutdown
- Modular TIR optics
- Bluetooth 5.3 / Race iOS app
- CANbus keypad
- 24 programmable presets
Five interchangeable individual optics let you tune the beam and replace an optic in under five seconds. Solid hardened-polycarbonate TIR optics sit in precision 6061-T6 billet aluminum bezels with bayonet locking and O-ring seals inside and out. The five individual optic designs are distinct from the complete-bar Spot, Combo and Flood configurations.
The thermal design removes the insulating dielectric layer from the LED-to-heat-sink path. The solid copper PCB is metallurgically bonded to a cold-forged pin-fin heat sink, with durable nickel plating. Temperature monitoring at every module supports active thermal management.
Interchangeable optics establish the base coverage. Dual LED arrays and individual module control let you adjust relative output to change beam balance dynamically while driving. This dual-color model also lets you adjust the array color balance. Electronic adjustment changes the contribution of the arrays and modules; it does not move or replace the optics.
Power and current limits can be set in both the app and the light. Within the configured limit, the controller varies power across modules behind different installed optics to emphasize spot, flood or a blend while driving. This lets you put the available electrical capacity toward the coverage you need.
Plan your installation
Nominal size describes the product family. Check the actual dimensions above against your mounting space, including brackets and cable clearance.
Match your vehicle's available electrical capacity, wiring and protection to the selected light. Maximum published draw for this model is 38.6 A at 12 V. Confirm the required harness, compatible controller, connectors and circuit protection with Race Lights and confirm which installation parts are included before ordering.
Wiring wizard Mounting & bracket guideWarranty & support
Zenith lights carry a limited lifetime warranty for the original purchaser covering defects in materials and workmanship during normal motorsports use. Terms and exclusions apply. See warranty details.
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