Wheels Manufacturing Pro StackRight Headset Spacer Kit - Black MFPN=1679 440C stainless steel bearings with

440C stainless steel bearings with a dual lip seal and marine grease offer durability and corrosion resistance

Aluminum lever blade and steel hardware ensure durability

Fast rolling smooth round profile with water evacuating siping

Requires SRAM power meter crankset or Flight Attendant pedal sensor (RS7200)

30mm Stack height

Wheels Manufacturing Pro StackRight Headset Spacer Kit - Black MFPN=1679 440C stainless steel bearings withStackRight Headset Spacers look great and stay that way! No more misaligned headset spacers thanks to the StackRight technology which locks spacers together with an interlocking channel for a clean sleek look. The Pro kit features a flat top cap design which conceals the stem bolt for a custom finished look. Fits 1 1 8" threadless fork steerer Inner Diameter: 28. 9mm Outer Diameter: 34. 4mm Precision machined 6061 aluminum Kit includes 1. 5mm (2) 2.