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Vehicle Fitment
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.


Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
The Go Rhino Dominator Extreme D1 SideSteps (Kit D14129T) are engineered for the 2021 and newer Ford Bronco 4-Door non-Sport models. Designed to be both rugged protector and an access aid, the Dominator D1 blends slider strength with drop-step convenience. Built with heavy-duty steel, a textured black finish, and no-drill brackets, this full-length side step system offers the perfect mix of style, utility, and off-road toughness. Whether climbing into a lifted Bronco, protecting the rocker panels on trails, or enhancing daily usability, these SideSteps deliver premium value and proven longevity.
Key Features
Full cab-length slider style side steps with drop-down stepping surface for easier entry/exit
Heavy-duty mild steel construction for strength and protection
Textured black powder coat finish that resists corrosion, chips, and fading
Raised hex pattern / dimpled step tread providing no-slip grip in wet or muddy conditions
Uses OEM step / rock rail mount locations; no drilling or cutting required for installation
Complete kit includes D10073T Side Steps + D64129TK Dominator Brackets
Benefits
Enhances accessibility — especially helpful if the Bronco is lifted or has larger tires
Provides rocker panel protection from trail hazards, road debris, and daily wear
Aggressive styling integrates smoothly with rugged builds
Full step coverage for both front and rear doors makes passenger entry and exit easier
Covered by a Limited Lifetime Warranty on materials/construction and a 5-Year Warranty on the textured black finish
Product Specs
Material: Mild steel
Finish: Textured black powder coat
Step width: Approximately 5.5 inches usable stepping surface
Dimensions: Approx. 77 in length, 10 in width, 9 in height
Weight: About 81 lbs per pair
Mounting style: Brackets mount to rocker panel using OEM locations, no drilling required
Kit includes: Pair of side step bars, mounting brackets, and hardware
Install Difficulty Level
Installation is straightforward and designed for ease. Because the brackets use OEM mounting locations, no drilling or cutting is required. With basic hand tools, most installs can be completed in about 2 hours. The heaviest task is aligning and supporting the side bars during installation, but with a jack or an extra set of hands the process is simple.
Note: Installation requires the removal of OE Rock Rails (if equipped)
Vehicle Fitment
This part fits the Ford Bronco 4-Door (Not Sport) for model years 2021 through 2025. It is compatible across all factory engine options. It does not fit the Bronco Sport or 2-Door versions.
For questions about this product or to report description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
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