Enduro Zero Ceramic Bearing Kit Color:Silver Integrated brake lever mounting

Integrated brake lever mounting

SIS compatible duraluminum construction

The Surly Jethro Tule is the perfect multi-functional tool for riders who appreciate simplicity and durability

and paired with the next generation of electronic integration

Enduro Zero Ceramic Bearing Kit Color:Silver Integrated brake lever mountingEnduro 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