Our stock setup with no shim is designed to work for the vast majority of riders. By popular demand here is a shim kit for those who want to experiment with different setups. 6 Shims are included, 3 Positive (+0.25, + 0.5, +1.0) and 3 x negative (-0.25, - 0.5, -1.0), these can be stacked to achieve a variety of angles.
Adding a Positive shim (we call it positive because it is increasing the angle between front and back wing, usually achieved by lifting the back of rear wing) is useful for heavier riders to provide more front foot pressure, can have a slowing effect.

Adding a Negative shim (we call it negative because it is decreasing the angle between front and back wing, usually achieved by lifting the front of rear wing) is useful for lighter riders as it reduces the front foot pressure and can be faster.

For a full explanation of how shims work, refer to the Shim section of the AXIS Product Brochure:www.axisfoils.com/current-brochure

Remember: USE 25mm M6 Bolts to secure rear wing when using shims