PB Base Gallon Tire Prep Foundation for Kart Racing TreatmentsBuilding a winning tire prep strategy starts with a solid foundation, and PB Base in gallon size delivers just that. Encased in a sturdy metal can for safe transport and storage, this product serves as the core ingredient for creating personalized kart tire treatments. Whether you're aiming to soften durometers for better grip or condition for longevity, PB Base mixes seamlessly with other compounds to fine tune your setup for any track condition.