Optimus Tire Casing:Trail At e*thirteen

At e*thirteen

ALL e*thirteen Cassettes utilize two-piece construction

Sidekick anti-kickback hub technology eliminates kickback and filters drivetrain vibration

Check out our updated Helix Core rings here: Helix Core e*spec Chainrings

This center knob configuration also helps to provide a more predictable feel and consistent traction when transitioning from straight-line to aggressive cornering angles

Optimus Tire Casing:Trail At e*thirteenThe Optimus 2. 4" is designed to deliver confidence inspiring trail traction with lower roll resistance at XC Down Country weights. The 2. 4'' high volume design promises the comfort of burlier trail tires and the same ability to run lower air pressures, but a tread and casing configuration that targets maximum rolling efficiency . The Optimus features e*thirteen's Endurance compound, with a firm base layer and center knobs, and softer medium tack