Toyota / Lexus / Mazda Adjustable Seat Jackers — Install Guide

Before You Start

• A helper is recommended for lifting the seat.
• Remove any plastic trim pieces as needed during installation.

Important Notes

To help prevent cross-threading during installation, always start bolts by hand and ensure they thread smoothly before tightening.

Seat Jacker Orientation:
Seat Jackers are tapered. The thicker side must always face forward.

Rear Installation:
The same installation steps apply to the rear seat mounting points, but the installation process is reversed.

Multi Mount Panel (MMP) Installation:
If installing the Multi Mount Panel, it attaches to the Seat Jacker shim with the threaded holes. Slide the Seat Jackers forward so the seat guide pins sit into the notched cutout of the Seat Jacker. Reference the installation photo below.

Step One — Remove Front Seat Bolts

• Remove any plastic trim pieces at the base of the seat, if equipped.
• Remove both front factory seat bolts.
• Loosen the rear seat bolts, but do not remove them.

Step Two — Lift the Seat

• Lift the front of the seat by pushing backward on the headrest.
• Alternatively, have a helper gently pull upward from the rear seat area.

Step Three — Install Seat Jacker Shims

½" Lift — One Seat Jacker Shim

• Use the Seat Jacker shim with the threaded hole and “Seat Jackers” engraving.
• Place one shim under each front seat rail, between the rail and the carpet.
• The threaded hole at the front of the Seat Jacker is used for the optional Multi Mount Panel.
• Make sure the thicker end faces forward.

1" Lift — Two Seat Jacker Shims

• Stack both Seat Jacker shims together.
• The shim engraved “Seat Jackers” installs on top.
• The notched sections are designed to nest together.
• Place the Seat Jacker stack under each front seat rail, between the rail and the carpet.
• Make sure the thicker end faces forward.

Step Four — Install Seat Bolts

Install the provided 50mm button-head bolts through:

• The seat rail
• The Seat Jacker shim(s)
• Into the vehicle floor

The same 50mm bolts are used for both the ½" and 1" lift configurations.

Start all bolts by hand before tightening.

IMPORTANT — Alignment Tip

If the seat rail holes do not line up:

• Lift the seat approximately ¼ inch.
• Start the bolt a few threads.
• Adjust the seat rails one at a time until properly aligned.
• Confirm the rear seat bolts are loose enough to allow movement.

Never force or cross-thread the bolts.

Step Five — Torque Bolts

Torque the front and rear seat bolts to 30ft-lbs.

Step Six — Reinstall Trim

Reinstall any plastic trim pieces removed during installation.

Final Check

• Verify all bolts are torqued to specification.
• Confirm the Seat Jackers are properly positioned with the thicker side facing forward.
• Verify the seat is secure and properly aligned.
• Recheck bolt torque after a few days of driving.

You're done. Enjoy the improved seating position.

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