Exclusive pedal karts built on trusted Prime Karts chassis and finished with original graphics created for Superior Karts in collaboration with River City Play Systems.
Shop kid-sized XM-4 karts, full-size XL-4 models, the commercial-grade XL-4 PRO, and preview the two-seat XXL-4 tandem. Six designs are available for preorder with expected availability in November 2026. The REX XXL-4 is coming soon.
