You can download these instructions as a PDF here: 66-77 Early Ford Bronco Rock Sliders Installation
Installing the Early Ford Bronco Rock Sliders
First, determine which Ford Bronco rock slider is to be installed on the driver and passenger side. Each guard has a small notch removed from the inboard side where it makes contact with the backside of the rocker panel. This notch should be at the end closest to the front tire. The cutout is slightly oversized to allow for adjustment of the slider front to back.
Next, hold the guard up to the corresponding side. It is best to have a friend help for this step.
The rock slider should fit snug, so some persuasion may be necessary. You can also use a floor jack or high lift jack to hold the slider in place.
Make sure the slider is positioned to your liking, there is a small amount of adjustability available. The forward most hole is used to bolt the rocker on with the 1/4” bolts provided. The rear most hole also gets a bolt to fasten it on. The rest of the predrilled holes in the guard, on the front and back side, are for the sheet metal screws. Drill a small hole through the rocker panel to get the screws started. It may be necessary to remove or lower the secondary tank to make room to install the screws on the back side of the rocker. Repeat for the other side. These guards were designed to protect the lower portion of the body from rocks and other trail obstacles. They were not created to be a step for accessing the vehicle. By using them for this purpose, there is added stress placed on the mounting hardware which was not designed for this type of use. The fasteners could distort the body and the sliders could start to separate from the body.
Installing the 66-77 Early Ford Bronco Rock Sliders
NOTE: The early Ford Bronco rock sliders are NOT designed to be used as a step to enter the Bronco. Using the nerfs as a step could cause damage to both the rock sliders and the body of your Bronco.
How do you keep water from getting between the body and the rock slider? I’m having them installed at a body shop and would like some additional information if possible
Thanks,
Jim
Hi Jim,
We run our rock sliders without any strip between the slider and the body. We have had no problem with water getting trapped or anything like that. The water that does get in between tends to blow out as you drive it or air out when the sun comes up. That said, if you want to prevent water from getting between the sliders and the body, your best bet would be to use some fender flare welting to run along the edge of the sliders. We offer the fender flare welting separately, part #1890W . Another option to allow better drainage of the water would be to drill a few drain holes in the bottom lip of the rock sliders to allow any sitting water to drain out from the bottom. Hope this helps. Thanks for the comment.
Garrett
Tom’s Bronco Parts