Gear Shift Knob

Shift knobs with your own shift pattern and lever thread

Choose the thread of your shift lever, the shape, and the shift pattern of your gearbox. The pattern goes on the flat top, flush in a second color or raised. A hex nut pressed into the bottom of the knob screws onto the lever, so the knob doesn't depend on a plastic thread.

Free to download. A short ad may play before your file.

One solid body, no colors. Works with every slicer.

Presets
Lever and mount

Unscrew your old knob and check the thread on the lever, or look it up for your car model. The size is printed on the matching nut.

A steel nut pressed into the knob is much stronger than a printed thread.

mm

How far the lever goes into the knob.

Shape
mm
mm
Top and colors

Where R is on your gear lever.

%

In a one-color STL, flush marks are engraved.

Advanced

Measure your nut across the flats. M8 and M16 are the same in both.

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About this generator

Make a gear shift knob with your own shift pattern on top: 4 to 7 gears, reverse where your car has it, and the right thread for your lever. A steel nut inside holds it on the lever. Ball, drop or puck shape.

How to use

  1. Find the thread of your shift lever (unscrew the old knob, or look it up for your car).
  2. Choose shape and size, and set the number of gears and where reverse is.
  3. Print it, press a steel nut into the hex pocket with a drop of epoxy, and let it cure.
  4. Screw the knob on and lock it with a jam nut or thread locker.

Printing tips

  • Print standing on its bottom with 4 or more walls and 30% infill or more. No supports needed.
  • Use PETG or ASA. PLA softens in a car parked in the sun.
  • For a two-color pattern, assign the second filament to the Pattern part in the 3MF.
  • Check that the knob sits tight before you drive.

Helpful guides

Frequently asked questions

Which thread does my car have?

Common lever threads are M8x1.25, M10x1.25, M10x1.5, M12x1.25 and M12x1.5. Check your old knob or the nut on the lever, or search for your car model. Only the diameter matters for the nut pocket; the pitch matters if you use a printed thread.

Why a nut instead of a printed thread?

A shift knob gets pushed, pulled and twisted thousands of times. A steel nut glued into the knob holds much better than a fine plastic thread.

Is a printed shift knob safe?

Only if it sits tight. Print it strong in PETG or ASA, glue the nut in, lock the knob with a jam nut or thread locker, and check it before you drive. Some cars have a reverse lock-out collar or a boot that needs the original knob; don't use a printed knob there.

Can I put my initials on it instead?

Yes. Set On top to Text and type up to 6 characters.

What does the ring around the top do?

It's a thin circle around the pattern in the second color. Turn it off for a plainer look.