Facility Enhancements > Pedal Karts XL 4 Bottom Bracket Cartridge Details Related Articles Gallery The XL 4 Bottom Bracket Cartridge is a replacement part for Prime Karts XL 4 pedal kart Models. $30 XL 4 Bottom Bracket Cartridge quantity Add to cart Questions? Contact Us Others also viewed… Playable Fountains Splashpad® Water Journey™ Spraypoint® You may also like… Splashpad® Hampton 3-in-1 Pool, Dining, & Table Tennis Racer Inner Tube Soft-Contained Play Units