FSA Orbit 1.5E ZS1 Internal Headset H2051A 5.3mm/12.8mm Stack Height ColorColor-Nickel Plated Compatible with Shimano's SW-RS801-S/T/E satellite

Compatible with Shimano's SW-RS801-S/T/E satellite shifter (sold separately) Brake Lever Actuation Hydraulic Rotor Included No Brake Lever Use Right Rear Der/Shifter Compatibility Shimano Road Di2 Drivetrain Speeds 12 Color Black Hydraulic Fluid Type Mineral Oil Includes Brake No Adjustable Reach Yes Adjustable Contact Point Yes Defined Color Black Side Right

creating completely new formulations for conditions where the snow is old and challenging to get grip

37 BB/Frame Interface English BB Shell Width (mm) 100 Weight 110 Spindle Interface Type RaceFace EXI Defined Color Black

Weight:  46gMaterial: 6061-T6 with stainless steel hardware

Color Black/Tan Flat Protection Tread and Sidewall TPI 60 Weight 479 Weight (oz) 16

FSA Orbit 1.5E ZS1 Internal Headset H2051A 5.3mm/12.8mm Stack Height ColorColor-Nickel Plated Compatible with Shimano's SW-RS801-S/T/E satelliteFSA Orbit ZS Headsets