How to adjust the ski Boot flex

The “flex” of a boot indicates the level of support that boot will deliver. The greater (stiffer) the flex index, the more rigid and reactive the boot will be. The lesser (softer) the flex index, the more tolerant and comfortable.

The choice of flex is crucial to the performance each boot will deliver and is selected based on the skier level, the discipline and the weight of the skier. 

In general we can identify three levels of flex:

For men, generally it is assumed that:

-          A flex from 60 to 70 is designed for beginners to intermediate.

-          A flex from 80 to 110 is designed for intermediate to advanced skiers.

-          A flex from 120 to 150 is designed for expert skiers.

For women, generally it is assumed that:

-          A flex from 50 to 7O is designed for beginner to intermediate skiers.

-          A flex from 80 to 90 is designed for intermediate to advanced skiers.

-          A flex from 100 to 110 is for expert skiers.

Warning:

-          Too stiff or rigid of a flex can limit a skier’s ability to progress.

-          Heavier and more powerful skiers should select a boot with a higher flex index.

Two methods will allow you to adjust the flex of your boots:

Method 1: Removing Rear-Cuff Screws and Replace with Supplied Clips

-          To reduce flex by 6%, remove the top rear-cuff screw of each boot with a 3mm key and insert clip (supplied with boots) in its place. Push the clip in and tap with a hammer.

-          To reduce flex by12%, remove the bottom rear-cuff screw of each boot with a 3mm key and insert clips (supplied with boots) in their place. Push the clips in and tap with a hammer.

-          To reduce flex by 20%, remove both the rear-cuff screws of each boot with a 3mm key and insert clips (supplied with boots) in their place. Push the clips in and tap with a hammer.

Method 2: Adjusting Single Rear-Cuff Rivet

With a 4mm key, turn the rivet to the left to reduce the flex or to the right to increase it.