Chris king dropset 1 headset is41 is52made with hard wearing, quality top quality materials, this versatile chris king headset keeps your fork rotating with smoothly and efficiently when connected to your head tube. Combining a 41mm upper bearing and 52mm lower part, it maintains a solid yet easy grip to your fork with its patented griplock construction, allowing for uninhibited twisting and turning as you weave your way to your destination. Compatible with santa cruz and yeti frames among others, this reliable and long lasting headset is an ideal addition to your cockpit.features upper bearing 41mm 45x45 lower bearing 52mm 36x45 design patented griplock construction compatibility  santa cruz, yeti, alchemy frames without baseplate and more buy chris king components from chain reaction cycles, the world's largest online bike store.