Karakoram Flex-Locks

Flex-Locks add lateral stiffness to your binding's highback, which gives you more leverage and stability when side-hilling on steep or icy slopes. By locking the highback, they mimic the rigid feel of a hard-boot setup, allowing you to edge more effectively without your boot flexing.

No, they are specifically designed for use with Karakoram AirFlow, Reactive, and Carbon highbacks. You should verify your specific highback model before purchasing to ensure a proper fit.

Yes, when the Flex-Locks are engaged, they restrict the highback's movement, which results in a slightly reduced stride length. Most riders find this trade-off worthwhile for the added control on technical terrain, but you can easily disengage them for a more natural stride on flatter sections.

The system uses a simple string knot mechanism for manual length adjustment. This allows you to fine-tune the tension to match your specific boot and highback combination.

Not at all. The device is designed to be engaged and disengaged quickly and easily, even while you are out in the backcountry. It is meant to be used on-the-fly, so you can lock in for a steep traverse and release them as soon as the terrain flattens out.