Cobalt R4 Coastal Boats For Sale

The Cobalt R4 is a 24-foot-3-inch stern drive day boat and the smallest model in Cobalt's R series, built for lake water sports and comfortable cruising. It carries an 8-foot-6 beam, seats up to 13 people (roughly 2,000 to 2,100 pounds), and has a 50-gallon fuel capacity. Draft runs 19 inches with the drive up and 36 inches down, and dry weight is 5,290 pounds including the engine. There is no head aboard, so it suits day outings on the lake rather than overnighting. As of spring 2026 a new R4 was listed at $155,284, useful context if you're shopping the used market later.

Power comes from a single stern drive ranging from 300 to 430 horsepower, with engine choices spanning MerCruiser, Volvo Penta, and Cobalt's Monsoon (a marinized MerCruiser tuned for higher output). Boats fitted with 350 horsepower options include the Monsoon 5.3-litre, the Volvo V8 with aluminum block, head and manifold, and the Mercury 6.2-litre MerCruiser. Top speed lands between 47 and 52 mph depending on the engine. Fuel consumption averages about 1.75 to 1.9 miles per gallon at a typical cruise, which works out to roughly 70 to 100 miles of range on the 50-gallon tank. The deep-V hull settles chop, and the stern drive makes the R4 more nimble to dock and turn than a shaft-driven wake boat.

The helm runs dual Garmin touchscreen displays handling navigation, digital gauges, engine diagnostics, and the RGB lighting that comes standard on the R series. Some boats use dual 10-inch Garmins; others the Garmin 8610. The leather-wrapped stainless steering wheel, push-button LED switching, and squared-off windshield frames carry through Cobalt's dash detailing. A wireless phone charging mount sits at the captain's station, with USB receptacles throughout. Audio is a Bluetooth system built on JL Audio components with a Fusion head unit and an available subwoofer upgrade. Volvo-powered boats carry a 5-year engine and drive warranty.

Driver aids reflect the easy-handling intent: Lenco trim tabs let you rebalance the boat when passengers crowd one side, while digital throttle and shifting with active trim control adjust the drive automatically for chop and planing. The R4 runs a dual-battery system with a dual battery maintainer.

The cockpit and transom are arranged for socializing. A patented flip-down swim step replaces the usual telescoping ladder, and the aft seating converts between forward-facing bench, aft-facing rumble seat in a back-to-back layout, or a full sun pad that drops into a bed configuration. There's a transom shower, a transom stereo remote, JL speakers, and 12 cup holders. Storage is extensive, including in-floor compartments, a midship ski locker, Gold Wing-style bow bins, and self-bailing wells that double as coolers. Hydraulic bow hinges lift the cushions on a handle pull for access to the deep, finished bow lockers. The R series adds a folding arch with an easy-fold bimini and rotating sunshade, plus available tower speakers.

A retractable heater tube and a fold-open bow door with windshield extend the season into cooler weather, letting you close off a protected helm area. For salt or brackish use, the closed-cooling engine option with a heat exchanger keeps raw salt water out of the engine passages and is worth specifying. Cobalt R4 boats for sale typically arrive heavily optioned, with packages such as the white folding arch tower, 220-volt battery charger, solid teak dinette table, full mooring cover, soft-grip flooring, wireless anchor system, and custom three-colour hull with caramel interior.