Chris King DropSet 3 tapered headset

The DropSet 3 is an integrated IS41/52 headset for use on frames having a 1 1/8" to 1.5" tapered head tube/fork steerer and a head tube inner diameter of 41mm upper/52mm lower (like the 2020 All-City Thunderdome). Featuring Chris King's patented GripLock retention design for exclusively reliable headset adjustment.   Professional installation is strongly recommended for all Chris King products. Specifications • 1 1/8" to 1.5" tapered • 7075 T-6 Aluminum construction w/ premium stainless steel cartridge bearings • engineered, manufactured and assembled in Portland, Oregon USA • lifetime warranty • head tube id: 41mm upper/52mm lower • 45º/45º angular-contact top bearing; 36º/45º lower • stack height: 10mm • weight: 106g