2014 KZ RV Spree 321RKS, 2014 KZ RV Spree 321RKS The Spree lightweight travel trailer features comfortable and spacious residential luxury. Surrounded by warm wood tones and three designer interiors, the Spree is sure to exceed your expectations. Spree floorplans are engineered for the long haul with six sided aluminum framing. The Spree is available in 12 floorplans that range in length from 24' 6 ½" to 36' 6".