These adapter and extension conversion bars are perfect if you have bought a shift knob or want to get a shift knob for your Japanese car with the wrong size direct thread and also want to add a bit of length to your gear stick.

This listing is for one conversion and extension adapter bar to fit a direct thread of 12x1.75 (lever side) and converts the thread to 12x1.25 (knob side). 

This means that it will fit on gear sticks with a pitch thread originally of 12x1.75 (please do check your specific application) that will then allow you to fit a JDM shift knob that is of 12x1.25 thread. 

We have other thread adapter sizes under separate listings.  

Material: Stainless Steel

Overall height: 50mm

Main Body: 35mm

Screw section length: 15mm

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S-TOCK JDM shift gear knob adapter & extension bar ST-448 12x1.75 to 12x1.25

  • Brand: S-TOCK
  • Product Code: ST-448
  • Availability: In Stock
  • £18.99


Tags: Gear Knob Adapter Shift Knob Adapter Gear Knob Extension Shift Knob Extension Adapter Screw Caliber Conversion Screw Gear Stick Thread Adapter Gear Stick Extension Bar