Enduro Zero Ceramic Bearing Kit Color:Silver GU Energy Gel packs energy-dense

GU Energy Gel packs energy-dense calories in a portable packet to help sustain energy demands of any duration or activity

MAX: 160psi | 11bar

SIS compatible duraluminum construction

and paired with the next generation of electronic integration

Installs between stem and headset to adjust headset preload

Enduro Zero Ceramic Bearing Kit Color:Silver GU Energy Gel packs energy-denseEnduro Zero Ceramic Bearing Kit ZER ceramic bearings have ceramic balls and steel races. The balls are Grade 3, Silicon Nitride (Si3n4). The races are treated with a black oxide coating, which helps prevent rusting in the bearing. The races are then reground to a mirror finish after this treatment. Finally, they are cryogenically treated for strength before assembly. We also use Silicone VV seals, which is the lightest drag seal available on the