The 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 sidewall knobs, for minimized rolling resistance, 30% higher durability and wear-life, and biting traction in the corners and off-cambers. Choose between XC and Trail casings. Optimus XC has a single ply 120tpi casing with tubeless insert for ultimate suppleness and dependable air retention. The Optimus Trail casing is single ply 72tpi casing with tubeless insert, but takes advantage of a nylon breaker under the tread for heightened puncture protection and a more supportive feel in rougher terrain.

The Optimus' tread pattern was engineered with shorter, tightly spaced center knobs, which create a more efficient rolling contact patch through the center tread. This also enhances acceleration and climbing properties. Center knob sipes alternate between parallel and perpendicular to enhance both braking and cornering traction. More widely spaced transitional knobs help to control traction consistency and predictability when transferring through lean angles while self-cleaning effectively. Sidewall knobs are designed with a sophisticated profile to dig into looser terrain during aggressive cornering, and hook up on off-cambers. Horizontal upper sipes and arched cutaways with accordion side sipes help to improve flexibility in uneven terrain, while controlling sidewall knob deformation and roll-over at high lean angles.

The Optimus 2.4" is here to make your next ride longer, faster and more fun.

Features
Available in XC or Trail casing options.
Designed to improve efficiency on climbs and extend range.
Endurance compound enhances efficiency and delivers 30% longer tread wear.
Low rolling resistance design.
Trail-capable traction at an XC weight.

Specifications
Compatibility: Tubeless ready for 29" and 27.5" wheels
Compound: Endurance – medium-tack 50a side knobs with a harder 56a center and base compound for improved tread wear life and faster rolling
Ply: XC – 120TPI single ply with tubeless insert; TR – 72TPI single ply with tubeless insert and nylon breaker under tread
Protection: Nylon breaker increases tread puncture resistance and air retention; tubeless insert increases sidewall air retention
Size: 27.5", 29"

Mfr Claimed Weight
29”: XC/ENDURANCE - 812g TR/ENDURANCE - 852g
27.5”: XC/ENDURANCE - 698g TR/ENDURANCE - 766g