Range Industries S-550 Mustang Rear Mounting Kit Installation Guide
- June 14, 2024
- Range Industries
Table of Contents
Range Industries S-550 Mustang Rear Mounting Kit
Specifications
- Model: S-550 Rear sub-frame
- Compatibility: Designed for installation into 34 wide F-100 truck
- Manufacturer: Range Industries
Product Usage Instructions
Unpacking and Inspection
Begin by unpacking all components and carefully inspecting them to ensure
no parts are missing.
If any parts are missing, please contact [email protected]
for assistance.
Frame Preparation
Strip the front leaf spring hangers and shock mounts from the frame.
Optionally, you can remove the rear hangers for a cleaner look.
To remove frame rivets, follow these steps:
- Locate the subframe under the truck.
- Ensure all bolts are tight.
Notching the Frame
Notch the frame to accommodate the upper control arm of the rear sub-frame.
S-550 Rear sub-frame installation into 34” wide F-100 truck
Begin by unpacking all components and making sure no parts are missing. If any parts are missing, please contact [email protected] and we will remedy the situation ASAP. See list of all parts below:
- 1X pair Front brackets
- Bolts to leaf spring hanger holes and mounts front of sub-frame.
- 1x pair Rear brackets
- Mounts the top of coil-over and rear of sub-frame.
- 1x pair lower shock mounts with studs and nuts
- Adapts eyelet type coil-over to S-550 control arm.
- 1x pair sway bar relocation brackets
- Slides the sway bar back to allow clearance for the coilovers.
- 4X M10 x 16mm Bolts
- Attaches sway bar to bracket.
- 4X 2.75” Washers
- Fit underneath subframe bushings.
- 4X M16 Bolts and nuts
- Bolts brackets to S-550 sub-frame.
- 4X ½-13 SAE bolts and nuts
- Mounts top and bottom of coilovers.
- 26X M10 x 35mm bolts and nuts
- Mounts brackets to frame rails
Install Notes
- This kit fits Ford trucks with a 34” wide rear frame
- • Use blue (medium) Loctite or equivalent thread locker on any bolts that do not have lock nuts.
- Coil-over Mounting is ½” bolt x 1.375” wide
- If your coil-over uses 5/8 bolts, you will need a reducer sleeve.
- If your coil over is 1.25” wide mounting, use a pair of washers with it.
- Minor notching of the bottom of frame will be required, and drilling holes for mounting bolts
-
Frame Prep
Strip the front leaf spring hangers and shock mounts from the frame. You can optionally remove the rear hangers as well for a clean look, but it is not necessary. Our normal method for removing frame rivets is as follows:- Cut head off (sawsall, grinder, etc) and grind it flush. You can also drill the head off (1/2” pilot point drill bit).
- Center punch the rivet, and drill 1/8” pilot hole.
- Drill 3/8” hole into center of rivet approximately ½” deep. This releases pressure in the rivet and allows it to be pounded out. We recommend dewalt pilot point drill bits.
- Use a 5/16” punch inserted into the hole, and punch the rivet through.
- This leaves the frame un-mangled.
- It may not be the fastest way, but it is a safe and fool-proof way to do it.
-
Prepare the S-550 subframe.
- Remove the factory springs and shocks.
- Unbolt the sway bar.
- Install the sway bar relocation brackets as shown (to slide the sway bar back) with the factory bolts.
- Re-install the sway bar using included bolts.
-
Installing the first bracket
- Installing the front brackets is the first step- it locates the subframe under the truck.
- Bolt the bracket to the two rear-most holes for the front leaf spring hanger. Push the tab of the bracket up against the bottom of the frame as you tighten the two M10 bolts and nuts.
-
Notching the frame for the upper control arm
- Lower the truck onto the subframe (or raise it up to the truck)
- The front subframe mounts will fit over the locating boss on the bottom of the front mounting brackets.
- Look at where the upper control arm will interfere with the frame, and mark out where to notch the lower frame rail to clear.
- Remove the subframe and cut the notch
-
Final Mockup
- Lower the truck onto the subframe (or raise it up to the truck) again.
- Fit the rear brackets to the frame and sub-frame.
- Install a M10 bolt and nut to hold it in place
- Review overall fitment of parts
-
Full Installation of the brackets
- Remove the subframe again, leaving the brackets in position on the frame.
- Drill through remaining bolt holes and install bolts and nuts.
- Don’t forget holes that go through the bottom rail.
- Now reinstall the sub-frame and ensure all bolts are tight.
-
Coil-over installation
- Bolt the coil over to the lower shock mounts included in the kit.
- Use a prybar to pull down on the suspension, and install the coil overs using the studs and nuts in the control arm, and the ½” bolt in the upper brackets
-
Installation complete
- Double-check your installation.
Useful information
- You can change the mustang driveshaft flange for a standard 1350 yoke by purchasing Ford PN F8TZ4851BA
- If you are using the factory rubber brake lines, the correct tube nut is M10 x 1.5 and needs a double 45° inverted flare. The hard line size is 3/16”.
- Coil overs should have approximately 12” ride height (center of bolt to center of bolt). The compressed length is typically 10” and extended length is 14”. We recommend a spring rate of 350 lbs/in.
Related products
Range makes matching kits to install the Crown Vic front suspension on the
front of your truck. We also make an electric steering rack conversion kit and
a budget big brake kit (since you now have huge rear brakes!)
Thank you for purchasing our products, and don’t hesitate to contact us.
Range Industries
