The ratcheting strap that feeds through a Caliper Buckle takes constant stress every time you tighten, release, or adjust fit during a ride. Over years of use, the teeth that engage the buckle mechanism wear down, making it harder to achieve a secure closure or causing the strap to slip under load. Sidi sells these straps separately from the buckles, so you can replace the worn component without buying hardware that still functions correctly.

These straps work exclusively with Sidi's Caliper Buckle system and will not fit other closure mechanisms. The ratcheting teeth are sized and spaced specifically for the Caliper Buckle's engagement pattern. If you're running shoes with a different instep closure like the Tecno-3 dial system or standard velcro, these straps won't help you. Check your current setup before ordering to confirm you have the Caliper Buckle hardware that these straps are designed to engage.

Installation takes under a minute per shoe. The strap slides through a molded loop on the instep closure band, and you simply pull the old strap out and feed the new one into the same channel. No tools required, no screws to manage. The rugged composite construction matches what Sidi installs at the factory, so you're restoring original performance rather than improvising with aftermarket alternatives.... Read More