Facility Enhancements > Pedal Karts XS-4 Racer Tire (Knobby) Details Specifications Related Articles Gallery The XS-4 Racer Tire (Knobby) is a replacement part for Prime Karts XS-4 Racer pedal kart model. Specifications Product Weight 1 lb Dimensions 13" x 13" x 2" SKU: PKX 2301400 Tags: on-land, parts, replacement. Brand: Prime Karts $22 XS-4 Racer Tire (Knobby) quantity Add to cart Questions? Contact Us Others also viewed… Water Journey™ Spraypoint® Playable Fountains Splashpad® You may also like… Outdoor Playgrounds Playable Fountains Splashpad® XS-4 Racer Spoiler Support Bracket