FSA SL Hybrid ACB Bearing 1.5" 45°x45° External Adjustments-High Speed Compression Damping Wolf Tooth headsets are machined

Wolf Tooth headsets are machined here in our Minnesota shop with aircraft-grade 6061 aluminum

Mounts to seatpost and rails

With a wider profile

All sizes of 104 BCD chainrings are compatible with QUARQ power meters

Weight sample size (unit of measure) : KG

FSA SL Hybrid ACB Bearing 1.5" 45°x45° External Adjustments-High Speed Compression Damping Wolf Tooth headsets are machinedSuper Light (SL) headset bearings are 25% to 38% lighter than conventional bearings and offer similar durability SL bearings use a steel inner race and ball bearings with an abbreviated outer steel race housed inside an alloy shell TECH SPECS model ACB SL Hybrid MR128R description bearing (52mm) 45x45 degree size 1. 5" package each