What's the 2015 Subaru WRX shift knob thread size?

The shift knob thread size on a 2015 Subaru WRX is M12 X1.25 thread. This is a pretty common thread size for a shifter knob so there should be many available options on the market if You are looking to replace the shifter with something fitting Your style better. One thing You should always do is make sure that Your shifter is installed tightly when You do change it out. You do not want it to come loose while You are driving because that can lead to a loss of feel and could cause You to slip a gear when You are shifting between them. IAlso recommend putting a drop of temporary loctite on Your threads to help the shifter head stay in place.