What is the best shift knob for a Mazda RX-7 FD?

The "best" shift knob for an FD RX-7 depends largely on your hand size and visual preference, but a weighted knob—around 400g to 450g—is widely considered the sweet spot for optimal shift feel ¹. Lightweight knobs can make the shifter feel off, while solid metal knobs can become dangerously hot if the car sits in the sun.

Here are the most recommended options based on weight, fitment, and material:

OEM Mazda Options

Many drivers find that it is very difficult to beat the factory Mazda options for weight and ergonomics.

• Stock FD Knob: The original knob is heavily favored for its perfect weight and feel ¹.
• Spirit R Knob: An OEM weighted option featuring subtle red stitching ¹.
• Mazdaspeed Knob: Available in leather or carbon fiber, it is slightly larger than stock and offers excellent weight, though it is no longer sold new and can be expensive used ¹.
• RX-8 5-Speed Knob: Fits the FD perfectly, provides a high-quality OEM feel, and features a unique rotor shape ¹.

Temperature-Resistant Aftermarket Options (Delrin & Leather)

If your car spends time in the sun, you will want a knob that does not absorb extreme heat.

• Razo Leather (RA68A): Weighs 400g and uses a nylon insert system that threads securely onto the shifter, allowing for two different height settings ¹.
• Cobb: Features Delrin material over an aluminum core, which provides good weight while preventing the knob from getting excessively hot or cold ¹.
• JoyFast: Weighs roughly 400g and matches the FD's native M10x1.25 thread pitch. It is on the smaller side, making it ideal for drivers with average or small hands ¹.

Metal & Carbon Aftermarket Options

Note: Solid metal knobs (like those from FEED, Blox, or Voodoo) are well-made but get incredibly hot in the sun, to the point of being untouchable.

• Razo Carbon Fiber Ball: Drops the shifter height by about 2 inches and stays cooler in the sun than solid metal ¹.
• Garage Alpha Titanium: Weighs a solid 375g and is available with a matching parking brake handle ¹.
• Okuyama Carbing: Highly regarded for its length, increased shift leverage, and heavy knurling for grip ¹.
• James Barone Racing Spherical: If you want maximum weight, this is extremely heavy at 1.5 lbs of solid metal ¹.

Custom Adaptation (Moderate Difficulty)

• Science of Speed (SOS) NSX Type-S Replica: This heavy knob blends seamlessly with the stock FD interior and retains the shift boot nicely by slightly bending the retaining ring pins ³. To install this knob, you must use a tap and die set to cut new M10x1.25 threads into it so it fits the FD shift lever ³.