Chris King DropSet 4 Headset - 1-1/8" 42/42mm 45 Deg Black Product Type_Derailleur Hangers and Hardware Compatible with chain lines 49mm

Compatible with chain lines 49mm and wider including Boost 148

The GX is cold-forged for high strength and light weight loaded with trickle-down features and available with double or single rings

}SRAM DUB English Bottom Bracket - English/BSA 73mm E-Type SuperBoost + Black

}e*thirteen UL Ultralight Direct Mount Guidering for Boost Chainlines - 30t 10/11/12-Speed 5mm Offset Hyperglide+ Chain Compatible

Chris King DropSet 4 Headset - 1-1/8" 42/42mm 45 Deg Black Product Type_Derailleur Hangers and Hardware Compatible with chain lines 49mmChris King DropSet 4 Headset 1 1 8" 42 42mm 45 Deg Black. The DropSet 4 45x45 headset features a bearing designed from the ground up for the specific application of a drop in headset with an emphasis on reducing creaking. Additionally King's patented GripLock design provides improved pre load retention. TECH SPECS Defined Color Black S. H. I. S. Stem Clamp Diameter 28. 6 Threadless S. H. I. S Lower IS42 Bearing Type Cartridge Crown Race 30 Color Black