SRS Variable Velocity Stacks

Developed and made in the UK by Superbike legend and engine tuner Ray Stringer.  These variable velocity stacks will add power all across the usable rev range.
So whats a variable velocity stack?  Watch this video to see them in action.

https://youtube.com/shorts/wBQFXoUqKhg?feature=share

The benefits of variable velocity stacks are you can get both power and torque gains.  When they are in the short length you get more torque and then as you get higher up the rev range to that last few thousand rpm the stacks lengthen to help with power.