Malibu 21 MLX Boats for Sale

The Malibu 21 MLX was introduced for the 2017 model year as part of the Wakesetter lineup, designed to deliver top-tier surf and wakeboard performance at a more accessible price point. It was created to fill the gap between Malibu’s 20 VTX crossover model and larger boats like the 22 MXZ and 23 LSV. The 21 MLX measures 21 feet 11 inches in length with a beam of 102 inches and has remained a core model in Malibu’s lineup through the early 2020s.

Built on Malibu’s proven Wake Plus hull, the 21 MLX is optimized for wakeboarding and wakesurfing, generating large, clean, and customizable wakes. With up to 3,800 pounds of factory ballast and Malibu’s Surf Gate and Power Wedge systems, riders can shape and tune waves instantly. The boat’s mid-engine V-drive layout provides balanced handling, quick planing, and smooth tracking, whether fully loaded or cruising.

Under the engine hatch, the 21 MLX is typically powered by Malibu Monsoon M5Di or M6Di engines from Indmar, ranging between 360 and 430 horsepower depending on the year and configuration. Earlier models often featured the 410 or 450 Raptor engines before Malibu transitioned to its in-house Monsoon series.

Inside, the 21 MLX offers a traditional bow layout with plush vinyl, G3.5 or G5 towers (depending on year), and intuitive digital helm controls. It seats up to 14 passengers and offers ample storage while maintaining a driver-focused cockpit. Malibu’s attention to detail and craftsmanship are evident in every generation of the MLX, making it one of the best-performing and most practical 21-foot wake boats ever built.

The 21 MLX continues to be a top choice for riders who want Malibu’s performance and technology in a boat that’s easy to tow, store, and enjoy.