They're also a double pane lens that drastically helps with fogging

Foldable: Easily foldable

Featuring a perforated

a small compact pack is all you need

E-Thirteen Helix 12 Speed Race Cluster - XD Driver - Naranja - 42-50T - 12 Speed Images Uploaded - Ready for Review They're also a double paneUnlike SRAM Eagle, Helix R cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAM cassettes. As an added bonus, Helix R 12s clusters are backward compatible with and can be used to upgrade your existing TRS+ 9 50 cassette. When installing the Helix R cassette, as with any cassette, it's recommended to check for chain wear. If your chain shows 0. 5% or more wear, you will