Optimus Tire Casing:Trail The Optimus' tread pattern was

The Optimus' tread pattern was engineered with shorter

At e*thirteen

On legacy and XCX cranks the Guidering SL will achieve a 49mm non-boost chainline

and comfort

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

Optimus Tire Casing:Trail The Optimus' tread pattern wasThe 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