The Comp Logic sits at the entry point of Ritchey's headset lineup, and that's exactly where most riders need it. If you're rebuilding an older road frame, replacing a worn-out OEM headset, or just want a no-drama 1-1/8" threadless that'll outlast the bike it's bolted to, this is the one. The External Cup EC Threadless headset features a smaller upper bearing to save weight, while the lightweight, precision-machined aluminum cups are deep for solid insertion.

This is a standard EC34 external cup setup — the kind of headset that fits the vast majority of straight 1-1/8" head tubes from the threadless era through today's budget and mid-range road frames. Upper is EC34/28.6 for a 1-1/8" stem clamp, lower is EC34/30 for a standard 30mm crown race seat , and both sides use semi-cartridge sealed bearings that you can pop out and clean rather than fuss with loose ball retainers and grease packing.

Stack height comes in at 29.8mm total — 16.8mm upper and 13mm lower , which is worth knowing if you're swapping from another EC34 headset and trying to preserve your existing spacer stack and stem position. Star nut, top cap, and bolt are included, so it goes on the bike without a parts-bin scavenger hunt. Compatible with both standard threadless star-fangled nuts and the compression plugs used with carbon steerers.