Chris King DropSet 4 headset

The DropSet 4 is an integrated IS42 headset features Chris King's patented GripLock retention design for exclusively reliable headset adjustment, for use on Campagnolo-compatible frames having a straight 1 1/8" head tube/fork steerer and . Examples: pre-2015 Cinelli Vigorelli, MASH Histogram & MASH Bolt, Breakbrake17 Transfer, pre-2020 Affinity Kissena.   Professional installation is strongly recommended for all Chris King products. Specifications • 1 1/8" integrated • 7075 T-6 Aluminum construction w/ premium stainless steel cartridge bearings • 45°/ 45° IS42 angular contact bearings (Campy compatible) • engineered, manufactured and assembled in Portland, Oregon USA • lifetime warranty • stack height: 10mm