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 Spraypoint® Water Journey™ Splashpad® You may also like… Prime Kart Chain Break Tool Racer Spoiler Support Bracket Spraypoint® Soft-Contained Play Units