Pontoons
Supreme S21 Boats for Sale
The Supreme S21 is a 21 foot inboard wake and surf boat designed to deliver premium performance in a versatile size. Built by Supreme Boats under the Correct Craft family, the S21 provides a strong mix of surf capability, smooth handling, and practical comfort. Its deep V hull, combined with available QuickSurf technology and a well engineered ballast system, allows riders to create clean, adjustable waves on either side of the boat. Known for its durable construction, efficient hull design, and consistent performance, the Supreme S21 appeals to families and riders who want reliable surf and wake results in a boat that remains easy to tow, store, and maintain.
The Supreme S21 entered the market in the mid 2010s as part of the company’s S Series lineup, following the success of the smaller S202. The S21 extended the proven design of its sibling while offering more interior space, a higher ballast capacity, and stronger surf shaping features. Measuring approximately 21 feet 8 inches in length with a beam near 102 inches, the S21 provided a roomier layout without sacrificing maneuverability or fuel efficiency.
Power for the S21 typically came from PCM engines, including the standard PCM Crusader 5.7L and optional 6.0L configurations. The boat featured a V drive setup that delivered smooth, even power for wakeboarding and wakesurfing. Supreme’s deep V hull design helped the S21 perform well in choppy water while maintaining a balanced running attitude at surf speeds. The QuickSurf system, introduced on later model years, allowed for on the fly surf side switching, giving riders a fully adjustable surf wave without repositioning ballast.
Interior updates across the production run included improved vinyl upholstery, refined seating configurations, and modernized helm layouts featuring digital controls for surf and ballast management. The cockpit and bow areas were designed for comfort and easy movement, with durable materials suited for high use. Supreme also emphasized solid construction with a fiberglass stringer system and hand laid hulls that contributed to the S21’s stable feel on the water.
By the time newer models like the Supreme ZS232 and ZS212 entered the lineup, the S21 remained a respected choice among used boat buyers seeking a proven design with dependable surf performance and straightforward maintenance. Its balance of size, capability, and build quality has helped it remain popular in the pre owned market for both families and dedicated riders.