Go Kart Mojo D2xx Tyre Set Racing

The Mojo D2 Tyre Set is the official dry-weather slick tire spec for Rotax Max Challenge (RMC) racing across Junior and Senior non-shifter classes.

Overview & Function

Mojo D2 tires are engineered by CIK-FIA standards specifically for Rotax Max racing. Positioned as a medium-compound slick, the D2 strikes a balance between rapid warm-up grip and multi-session durability. It is designed to maintain consistent lap times over long stint race heats without dropping off sharply or suffering excessive thermal degradation.

Key Features & Performance Characteristics

• Rotax Class Homologation: Specially formulated to meet the engine torque curves and weight transfer profiles of 125cc Rotax Junior Max and Senior Max non-gearbox karts.

• Consistent Medium Compound: Provides predictable lateral grip across varied track temperatures, making setup adjustments consistent from practice to finals.

• Extended Tread Life: Resists severe graining and blistering, allowing racers to get multiple test days or heat races out of a single set without catastrophic grip loss.

• Tread Wear Indicators: Features molded-in depth dimples across the contact patch for easy visual checks of tire wear and alignment camber issues.

Technical Specifications & Sizing

• Tire Type: Dry Slick (Medium Compound)

• Homologation: CIK-FIA / Rotax Max Challenge

• Front Tire Dimensions: 10 x 4.50-5 (Fits standard 120mm / 130mm front wheels)

• Rear Tire Dimensions: 11 x 7.10-5 (Fits standard 180mm / 210mm rear wheels)

• Operating Pressure Range: Typically $0.85\text{ bar}$ – $1.05\text{ bar}$ ($12.3\text{ psi}$ – $15.2\text{ psi}$) cold, depending on ambient air and track surface temperature.