Cross riders fear not, your rim is supported. Yes, a robust pillar, the I-Beam, runs right down the center of the Frequency CX's rim cavity. Correct, you should go find some barriers to bunny hop. Fortunately, they're as svelte as they are stiff thanks to WT69 Alloy and with a true TCS profile, tubeless setup is a breeze. So go ahead, build a set and make the rest of the field jealous...better yet, storm past and force them to keep up. Available in both 32-hole and 28-hole.