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Rambo Marine Chattanooga, TN

4301 Hwy. 58,
Chattanooga, TN 37416

Rambo Marine Smith Lake, AL

5635 County Road 616,
Hanceville, AL 35077

Rambo Marine Huntsville

15904 Highway 231 North,
Hazel Green, AL 35750

Rambo Marine Birmingham

10396 US-280,
Westover, AL 35185

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Lewisville, TX 75067

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Rambo Marine

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Select a Store

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Use my current location

Rambo Marine Chattanooga, TN

4301 Hwy. 58,
Chattanooga, TN 37416

Rambo Marine Smith Lake, AL

5635 County Road 616,
Hanceville, AL 35077

Rambo Marine Huntsville

15904 Highway 231 North,
Hazel Green, AL 35750

Rambo Marine Birmingham

10396 US-280,
Westover, AL 35185

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Cobalt R4 OB

Cobalt · Rambo Marine

Cobalt R4 OB

Experience the thrill of the water like never before with the 2027 Cobalt R4 Surf, a new bowrider boat that perfectly blends luxury, performance, and versatility.

Model Overview

Cobalt R4 OB

The 2027 Cobalt R4 Surf is a testament to modern boat design, offering a spacious 24.25-foot layout that caters to both relaxation and excitement. With its striking navy hull bottom and sophisticated interior in Frost, Slate, and Ebony, this bowrider commands attention at every dock and on every lake. The new condition ensures you are stepping into a vessel that is pristine, untouched, and ready to deliver unforgettable memories for years to come. Cobalt’s reputation for quality and attention to detail is evident in every inch of the R4 Surf, making it a top choice for discerning boaters seeking a premium experience.

Length

24 '3"

Beam

8' 6"

Horsepower

350

Category

Bowrider

Engine Make

VOLVO

Built to Perform

Performance & Design

At the heart of the Cobalt R4 Surf is the powerful Volvo V8 350CE DP FWD engine, delivering an impressive 350 horsepower. This single-engine setup is engineered for smooth acceleration, responsive handling, and exhilarating top speeds, ensuring every outing is as thrilling as it is safe. The forward drive technology enhances maneuverability, making watersports, cruising, and docking effortless. Whether you are carving through waves or enjoying a leisurely cruise, the R4 Surf’s performance capabilities set it apart from other bowrider boats for sale in its class.

Cobalt R4 OB running at speed

Find Your Nearest Dealer

Available Locations

Rambo Marine Huntsville

15904 Highway 231 North, Hazel Green, AL 35750

256-263-5341

Rambo Marine Birmingham

10396 US-280, Westover, AL 35185

205-543-5415
Rambo Marine locations

The Rambo Marine Difference

Why Buy From Rambo Marine

Unmatched Expertise

Our knowledgeable team brings decades of combined boating experience to guide you through every purchase, service, and adventure on the water.

Curated Brand Selection

We offer a hand-picked lineup of top-tier boats, pontoons, and yachts, ensuring quality, performance, and style in every choice.

Full-Service Convenience

From maintenance and storage to prep and detailing, our full-service approach keeps your boat ready for effortless enjoyment all year.

Lifestyle & Community

We go beyond boats—creating a welcoming marine community with events, expert advice, and experiences that connect you to the water lifestyle.

Get On the Water Faster

Financing & Trade-In

Competitive marine financing with same-day pre-approval available. Or trade in your current boat and apply the value toward your Cobalt R4 OB.