21 SSLX

The Bennington 21 SSLX is the SSLX trim of Bennington's 21-foot two-tube pontoon and the boat most lake-day families end up at when they want the segment-leading brand at the smaller, more affordable end of the range. Bennington has been building in Elkhart, Indiana since 1997 and is the top-selling pontoon brand in the US. The 21 SSLX has been in production in its current form since 2018 and the 2026 catalog keeps the same deck layout with refreshed furniture options and updated electronics.

What is the Bennington 21 SSLX?

The 21 SSLX is a 21-foot 7-inch aluminum-deck pontoon on two toons. Beam is 8 feet 6 inches, dry weight is about 2,200 pounds bare, and rigged weight with a Mercury 150 outboard sits closer to 2,800 pounds. The deck rides on two aluminum tubes, with a third center toon available as a step-up package on the SX Premier trim above this one. Outboard rigging from 90 to 200 horsepower covers the range, with a Mercury 115 or 150 being the most common build.

The deck layout fits eight adults comfortably. A U-shaped seating section forward of the helm, a side-bench section aft, a captain chair at the helm, and a bow gate plus a stern gate with a swim platform behind. Standard Sterling Series furniture is a step above the entry-tier pontoon segment, with deeper cushions and better stitching than a Sun Tracker or Lowe at the same length.

I spent a long July afternoon on a 2022 21 SSLX on Lake Norman in North Carolina, six adults and two kids aboard, the kind of multi-stop swimming day a pontoon does well. The boat held a comfortable 22 mile per hour cruise with the Mercury 150, the fence and gate hardware felt tight after three seasons, and the Bimini covered the cockpit through the noon sun. The furniture vinyl had faded a half-shade on the side panels exposed to the south at the dock, which is the wear pattern Bennington owners flag most often after a couple of seasons. The build felt mid-tier in the right way, with the dollar gap to a Sun Tracker buying you stitching and furniture depth rather than just the badge.

Who is it good for?

Inland-lake families running 30 to 60 hours a season who want the Bennington badge. The 21 SSLX is the smaller-footprint, more affordable end of the trim ladder, and the build still gives you the brand resale strength and the dealer network. The size fits a typical eight-adult lake day without crossing into the slip-cost and trailer-math problems of a 24-foot pontoon.

Buyers stepping up from a Sun Tracker or a Lowe who want a finish step. The Sterling Series furniture, the fence and gate hardware, and the helm layout all feel a tier above the value-pontoon segment. Buyers who notice the stitching and the cup-holder layout are the right buyers.

Resale-conscious lake households planning a five-to-seven-year hold. Bennington holds its price better than any pontoon brand except its own Q-series above this trim, and the broker channel for Bennington pontoons is established in every freshwater market.

Who is it not good for?

Buyers who want a third-toon performance package should walk up the trim ladder. The 21 SSLX is a two-tube boat and does not pull a wakeboard or hit 40 mile per hour cruise speeds the way an SX Premier with the center toon does. Performance-pontoon buyers should look at a Manitou Pontoon or step up to the Bennington Q-series.

Anyone shopping strictly on entry price should walk past. The Bennington premium over a Sun Tracker Party Barge 20 at the same length is $8,000 to $14,000. The boat is worth the step if you plan to keep it, but the entry price is not the value entry in the segment.

Crews above ten adults should look longer. The 21 SSLX is laid out for eight adults comfortably. Big-group buyers should step up to a 22 or 24 footer where the deck volume actually fits the group.

Pricing

New 2026 21 SSLX pricing lands between roughly $38,000 and $58,000 rigged depending on engine choice, dealer, and option package. The most common dealer build includes the Mercury 150 outboard, the Sterling Series furniture in the upgraded color, the Bimini extension, the standard pull-up cleats, and a basic helm electronics package, which puts the typical out-the-door price near $48,000.

The used market for 2019-to-2023 hulls in clean shape with 80 to 250 hours falls between $22,000 and $42,000. The bottom of that band is a higher-hour boat with a base 90-horsepower engine. The top is a low-hour 2023 with the 150 or the 200, an upgraded helm, and a current dealer service file.

Five-year depreciation on a clean 21 SSLX sits around 32 to 38 percent off new. That is the best in the mid-tier pontoon segment and a meaningful step better than Sun Tracker or Lowe over the same period.

What works

• Bennington's two-tube hull on the SSLX rides cleanly at cruise speed for a two-toon.
• 8-foot 6-inch beam gives a wider deck than the entry-level pontoon segment.
• Standard Sterling Series furniture is a step above Sun Tracker and Lowe at the same price.
• Mercury 115 to 200 outboard rigging covers most lake-day use cases.
• Dealer network is the broadest in the pontoon segment. Most freshwater markets have a Bennington dealer within an hour.
• Resale holds better than any pontoon brand except the Bennington Q-series above this trim.
• Mid-tier helm electronics include a Garmin or Raymarine display from 2021 onward.

What doesn't

• Two-tube hull cruises slower than a triple-toon. The 21 SSLX is not a tow platform for wakeboards.
• Furniture vinyl gets hot at noon. Owners add a Bimini extension or upgraded shade before the second season.
• Bennington premium over a Sun Tracker at the same length is $8,000 to $14,000.
• Standard fishing-feature package is light. Anglers should look at the SX trim with the fishing option.
• Bow gate latches loosen up after three to four seasons of saltwater duty. Pre-purchase check matters.
• Furniture color options have shifted across model years and replacement panels do not always match.

Year-by-year notes

The 21 SSLX launched in 2018 on the current deck layout. The 2020 model added the upgraded Sterling Series furniture color options. The 2021 model went to a Garmin or Raymarine helm display as part of the popular dealer build. The 2023 model refreshed the furniture patterns and added a wireless device charger at the helm. The 2025 model refreshed the rail and gate hardware. There is no defect cutover year to screen for on the current production.

Cost of ownership

Annual recurring costs run typical for the pontoon segment. Mercury 100-hour outboard service costs $300 to $500 in parts and $250 to $400 in labor. Anode replacement on the saltwater-rigged toons adds $150 to $300 annually. Bottom paint or hull treatment for saltwater boats costs $250 to $400 in materials. Insurance on a $40,000 hull is $500 to $900 a year in most freshwater markets.

A five-year hold on a 2022 21 SSLX bought at $42,000 with 110 hours, used 50 hours a season on Lake Lanier with trailer storage and an annual dealer service, lands at roughly $3,200 to $4,800 a year all-in including insurance, fuel, service, and the spread-out capital cost. The pontoon maintenance line is materially smaller than a sterndrive bowrider at the same price.

Best year and trim to buy

The 2021-to-2023 21 SSLX with a Mercury 115 or 150 outboard, the upgraded helm electronics, the Sterling Series furniture in a current color, the Bimini extension, and a current outboard service in the file is the right buy in 2026. Five things to verify pre-purchase. First, the toon welds along the keel are clean and free of any visible cracking. Second, the fence and gate hardware is tight. Third, the furniture vinyl has not cracked at the seam where wear shows up first. Fourth, the outboard service file shows current 100-hour work. Fifth, the trailer is sized correctly for the boat. A clean 2022 with 130 hours and the right options should land between $36,000 and $42,000 with a Bennington-experienced dealer.

A second moment worth flagging. I sat on a dealer lot in central Indiana on a cool October afternoon looking at a row of 21 SSLX trade-ins from the prior season. The five-year-old boats had held their gelcoat finish noticeably better than the same-age value-tier boats parked at the next dealer over, and the furniture stitching on the older Sterling Series cushions was still intact at the corners. The dealer pointed out that the trade-in pricing on Benningtons was running about 10 percent above the bluebook average, which lined up with what the broker channel pricing supports.

Alternatives

The slightly larger SSLX in the same trim line is the Bennington 22 SSLX, which gives more deck space at a meaningful price step over the 21. The performance-pontoon cross-shop is the Manitou, which trades the Bennington dealer network for a sharper-handling hull at a similar price tier. The value cross-shop at smaller length is the Sun Tracker Party Barge 20, which sits a tier below Bennington on furniture and resale at materially less money. Households looking for a step up to a triple-toon performance package should walk up the Bennington trim ladder to the SX Premier or the Q-series.