Full Speed Ahead Orbit Xtreme Pro Headset 1-1/8" Black Model=BR-RS305 The result is ideal for

The result is ideal for riders looking to convert their road gravel cyclocross or commuter bike to the simplicity and light weight of a single chainring

Proper placement allows the rider to shift the rear derailleur up or down with the right thumb while in a climbing position

Fore/aft adjustment bolts for precision adjustment and secure clamping

}Onyx Ceramic Hybrid Bearing: 25 x 37 x 7mm (6805)

Full Speed Ahead Orbit Xtreme Pro Headset 1-1/8" Black Model=BR-RS305 The result is ideal forFull Speed Ahead Orbit Xtreme Pro Headset 1 1 8" Black. The FSA Orbit Xtreme Pro threadless headset is constructed of forged and CNC machined 7075 T6 aluminum cups. Forged and CNC machined 7075 T6 aluminum cups Stainless steel Angular Contact Bearings Stainless steel crown race 1. 5 patented alignment tip for increased durability and performanceadsets have 21mm headtube insertion Deep Cup model has 22mm insertion of upper and lower cups TECH SPECS