There are a total of 7 detent springs in the F20/F22 S2000 transmission. 5 of them are located on the RH side of the transmission case.

Each spring will affect the force in it's own way. You are able to mix and match these to fine tune the shifter movement to your likely. For example, you can install the F/R & L&R springs to give every movement a slight increase in force. Doing this and leaving all other springs stock is a great option.

If you install the other 5 springs you will further increase the stiffness and required force for each gear change.

Notice all positions marked in RED.

BE SURE NOT TO LOSE ANY OF THE DETENT BALLS THAT MAY FALL OUT WHEN YOU REMOVE THE OEM SPRING.