Overview
The ARB Old Man Emu Nitrocharger Sport Front Strut, part number 90047, is a front coilover strut for the Ford Bronco. It fits the 2021–2022 Bronco in the Badlands, Base, Big Bend, Black Diamond, First Edition, Outer Banks and Wildtrak trims.
Nitrocharger Sport struts are tuned so the valving matches the spring selection, accessory fitment and load the vehicle carries. The strut is meant to control the spring it is paired with, which is why ARB offers several valving options for some vehicles.
A coilover strut carries the vehicle’s spring and controls it, so the valving inside the strut affects ride and handling directly. Nitrocharger Sport valving is matched to the spring selection, accessory fitment and load the vehicle carries, which is why more than one valving option exists for some vehicles. Identify the coil spring you run and confirm it is one this strut is matched to before fitting.
The strut uses an OEM top mount and a bar pin bottom mount. Check that the bottom mount on your Bronco matches the bar pin arrangement before fitting, and make sure the strut is secured with the hardware it is supplied with.
Key features
- Front coilover strut in the Nitrocharger Sport range
- OEM top mount and bar pin bottom mount
- Gas-charged, 51 mm body
- Vehicle-specific valving matched to spring choice
Spring and strut pairing
A coilover strut combines the damper and spring in one assembly, so changing either part changes how the other works. When the spring is replaced with a different rate or height, the damping may no longer suit the load, and the ride can feel too firm or too soft. Coilover setups also affect steering geometry, so ride height changes can shift alignment and should be checked after installation.
Before fitting, inspect the top mount bushings and the bar pin bottom mount for wear or cracks, since a loose mount can knock and change the strut’s angle. Accessories such as heavier bumpers, winches or larger tires add weight to the front, which affects how the spring and strut work together. Recheck the mounting hardware after the first drives and at regular service intervals.
- Check top mount bushings for wear
- Inspect the bar pin for bending or cracks
- Recheck alignment after a height change
- Keep the spring and strut as a matched set
Specifications
| Brand | ARB 4×4 Accessories |
|---|---|
| Part number | 90047 |
| Shock series | Nitrocharger Sport |
| Location | Front |
| Shock type | Coilover |
| Top mount | OEM |
| Bottom mount | Bar pin |
| Body diameter | 51 mm |
| Charge | Gas charged |
Vehicle fitment
It fits the 2021–2022 Ford Bronco in the Badlands, Base, Big Bend, Black Diamond, First Edition, Outer Banks and Wildtrak trims.
Ford models other than the Bronco, and Bronco years outside 2021–2022, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The strut uses an OEM top mount and a bar pin bottom mount. Check that your coil spring pairs with the valving before fitting, because Nitrocharger Sport valving is matched to the spring.
