Jeep Seat Slammers (2018+ Wrangler JL/JLU / 2018+ Gladiator JT)

INSTALL INFO

FITS

2018+ Jeep Wrangler JL/JLU
2018+ Gladiator JT

DIFFICULTY

Tools Needed

T50 Torx with ratchet (Jeep Tool Kit) or E12 E-Torx (Gladiator)
8mm and 5mm allen key or allen socket
15mm Wrench
Sawzall w/Metal Cutting Blade or Angle Grinder w/Cutoff Wheel
Drill with 3/8” Drill Bit
Black Spray Paint
Blue Loctite
Optional – File to remove rough Cut/Drill edges

Included Parts

Option 1 Kit
2x Seat Slammer Blocks
1x Cutting/Drilling Fixture/Bottle Opener
4x M10 Washers (for use on Cutting/Drilling Fixture)
4x M8 Washers (for use on the Seat Slammers)
1x M10 Nut (for use w/Cutting/Drilling)
2x .5" Shims
4x .25" Shims
4x M8 1.25 x 30mm - Button Head Bolts
4x M8 Flange Nuts
2x M10 1.5 x 45mm Flange Bolts
Blue Loctite

Option 2 Kit
Everything from Option 1
2x .75" Shorty Front Seat Jackers
2x M10 1.5 x 20mm Cap Head Bolts
2x M10 1.5 x 30mm Cap Head Bolts
1x M10 Washer

IMPORTANT NOTES

Desert Does It will not be liable for any loss, damage, or injury directly or indirectly from the use or the inability to determine the use of these products. Before using or installing, the user shall determine the suitability of the products for its intended use, and the user shall assume all responsibility and risk in connection therewith. Any modifications to your vehicle are done at your own risk.

INSTALLATION INSTRUCTIONS

SEAT REMOVAL

Step One: Park the vehicle on a level surface, set the parking brake and disconnect battery terminals.
Step Two: Remove any plastic trim pieces to access the front and rear seat base bolts. Remove all front and rear factory seat base bolts (four total).
Step Three: Lift the front of the seat to gain access to the seat wiring. Unclip and disconnect any wiring between the vehicle and the seat.
Step Four: Gently and carefully remove the seat from the Jeep and place it upside down on a clean flat surface.

SEAT RAIL CUTTING AND DRILLING

Step Five: With the seat upside down, take the Cutting/Drilling Fixture and nest it in the seat rail with the slotted hole facing the front of the seat and the angled portion facing up towards the back of the seat. Bolt the Cutting/Drilling Fixture to the seat rail with one of the provided coarse thread bolts and nut, use washers to shim under the Cutting/Drilling Fixture so the fixture lays flat.
Be careful not to pinch the plastic seat rail guides when tightening the Cutting/Drilling Fixture. Push the Cutting/Drilling Fixture back toward the feet that are being cut off before tightening the M10 Bolt/Nut.

2 DOOR WRANGLER ONLY - When installing the Cut/Drill Fixture on the outside leg, the holes that will be drilled will just miss the seat rail stop rivet. You will need to ensure that the holes being drilled are on either side of the rail stop rivet. See Pictures.

POWER SEAT ONLY - If you have the new 2024 with the power seat, you will need to drill the rivet out that holds the threaded rod in place. Once you start drilling you will notice that the rivet will start spinning. Just drill out as much as you can, then use a hammer & chisel or Dremel. Once you remove the rivet, you can now attach the Cutting/Drilling Fixture and this will line you up to drill the next hole.

Step Six: Double check that the fixture is installed correctly and that the bolt has been tightened. IF YOU ARE NOT 100% CONFIDENT THAT THE CUTTING/DRILLING FIXTURE IS INSTALLED CORRECTLY, DO NOT PROCEED TO STEP SEVEN!
Step Seven: Are you ready to cut your seat rails? This is serious and you want to triple check everything is correct.
Step Eight: Here we go! Take your Sawzall w/Metal Cutting Blade or Angle Grinder w/Cutoff Wheel and begin cutting the seat leg off along the angled portion of the Cutting/Drilling Fixture. See pictures.
Step Nine: With the rear seat rail leg cut off, take a drill and 3/8” drill bit and drill out the two holes in the seat rail using the holes in the fixture as a guide.
Step Ten: Repeat Steps Five through Nine on the opposite seat rail.
Step Eleven: Take your file and remove any rough edges around the cut and drill areas. Now hit those areas with a can of your favorite spray paint.

INSTALLING SEAT AND SEAT SLAMMERS

Step Twelve: You can choose to install the Seat Slammers onto the seat rails when the seat is out of the Jeep, we prefer to install them when the seat is in the Jeep. This is because it's easier to fit the seat through the door opening without the Slammers installed.
Step Thirteen: Install the Seat Slammer blocks to the bottom of the seat rail with the Black M8 Button Head bolts (2 per leg with washers on top and flange nuts on bottom). The step/notch in the Seat Slammer should be facing down. To allow adjustability, only loosely tighten the four M8 bolts.The M8 Flange Nuts are redundant but we recommend installing them after the M8 Button Head bolts are torqued.
Step Fourteen: ONLY APPLICABLE WITH OPTION 2 KIT. Take the .75” Front Seat Jackers with the threaded holes and install them to the floor in front with the M10 1.5 x 30mm - Cap – Black bolts. Align the Seat Jackers and torque to 35 ft lbs.

REINSTALLING SEAT INTO JEEP AND GETTING COMFORTABLE

OPTION 1 KIT
This kit is adjustable and will drop the rear of your seat by 1”, 1.25” or 1.5”.

1” of drop is achieved by placing all provided shims under the Seat Slammer blocks (1” of shims under each Seat Slammer Block).
1.25” of drop is achieved by placing one .25” shim under the front mounting points (in between the seat rail and floor). Use the factory bolts to loosely bolt the front seat mounts down. Then use one .25” shim and one .5” shim under each Seat Slammer Block and use the provided Black M10 45mm Flange bolts to bolt the Seat Slammers and shims to the floor.
1.5” of drop is achieved by placing one .25” shim under the front mounting points (in between the seat rail and floor). Use the factory bolts to loosely bolt the front seat mounts down. Then use the .5” shim under each Seat Slammer Block and bolt them down with the provided Black M10 45mm Flange bolts.
*CAUTION IN SOME MODELS THERE ARE WIRES AND WIRE RACEWAYS THAT COULD BE PINCHED. IF PART OF YOUR SEAT RAILS REST ON WIRES, THEN ADD .25” SHIM TO THE FRONT.
If the seat rail holes are not lining up in front, adjust the seat rails individually.
Reinstall any wires that were disconnected under the seat and torque all bolts, M10 bolts get torqued to 35 ft lbs and M8 bolts get torqued to 25 ft lbs.

OPTION 2 KIT
This kit is adjustable and will drop the rear of your front seat by 1.25”, 1.5”, 1.75” or 2”

2” of drop is achieved by installing the .75” front Seat Jackers (See Step Fourteen above) and Seat Slammers.

Step One: Take the Front Seat Jackers with the threaded holes and slide them under the seat rails with the wings facing back.
Step Two: With blue Loctite, install the provided M10 1.5 x 30mm - Cap – Black bolts through the countersunk hole in each front Seat Jacker and thread them into the floor. These bolts go in at a slight angle. BE CAREFUL NOT TO CROSS THREAD THESE BOLTS, IF THEY DO NOT ALIGN, REALIGN THE SEAT RAILS. SOMETIMES YOU WILL NEED TO WIGGLE THE ENTIRE SEAT FRAME TO GET THE BOLTS TO LINE UP.
Step Three: Carefully align the Seat Jackers so the threaded holes are visible through the top of the seat rails. Torque front Seat Jacker bolts to 35 ft lbs.
Step Four: With blue Loctite, insert the provided M10 1.5 x 20mm - Cap – Black bolts through each seat rail and thread them into the threads in the Seat Jackers. The washer will be used to attach your seat mount to the Seat Jacker. These bolts go in at a slight angle. BE CAREFUL NOT TO CROSS THREAD THESE SHORTER BOLTS, IF THEY DO NOT ALIGN, LOOSEN THE FRONT SEAT JACKER BOLTS AND REALIGN.
Step Five: If the seat rail holes are not lining up in front, adjust the seat rails individually.
Step Six: Sit in the seat and confirm comfort. If the drop is too much, install the desired number of shims under rear Seat Slammer blocks. If over .25” of rear shims are used, use the longer Black M10 45mm Flange bolt.
Reinstall any wires that were disconnected under the seat and torque all bolts, M10 bolts get torqued to 35 ft lbs and M8 bolts get torqued to 25 ft lbs.