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Gulf Stream Trailmaster 406FLR

Travel trailerbuilt 2015– (in production)Caution build tierCommon on the used market
WHAT ONE COSTS
$50,100MSRP today

Still in production. A used 2023 would run roughly $26,500.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~10,787 lbestimated as towed, for 2 people

dry weight 9,987 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around11,990 lb (10% margin)
GVWR (the sticker maximum)11,569 lb
Tongue weight, loaded~859 lb (8%: low, watch for sway)
Cargo capacity1,582 lb
WHICH TOW VEHICLES IT FITS: 29 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 406FLR's published weights held steady.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-2613,300 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Chevrolet Silverado 1500 (max tow) '14-1812,500 lbfits, loaded, with 10% margin
Chevrolet Silverado EV (4WT) '24-2612,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '24-2613,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '15-2013,200 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '21-2314,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel) '11-1616,600 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
GMC Sierra EV '24-2612,000 lbfits, loaded, with 10% margin
Nissan Titan XD (Cummins diesel) '16-1912,710 lbfits, loaded, with 10% margin
Ram 1500 (5.7 Hemi eTorque, max tow) '19-2412,750 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
Toyota Tundra (i-Force Max, tow pkg) '22-2612,000 lbfits, loaded, with 10% margin
The 66it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length40.4 ft
Height (incl. A/C)11.9 ft
Width8.0 ft
Interior height6.7 ft
GVWR11,569 lb
Dry weight9,987 lb
Dry tongue weight795 lb
Cargo capacity1,582 lb
Sleeps4
Slide-outs3
Axles2
Fresh water0 gal
Grey water74 gal
Black water37 gal
Air conditioning13,500 BTU

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • Front king bedroom in its own slide(Permanent)72×80
  • Hide-a-bed sofa in the rear slide(Convertible)
HOW IT'S BUILT: 0/5
WallsWood frame + siding
FrameWood
RoofStandard
UnderbellyOpen

Gulf Stream (Caution tier): Gulf Stream Coach

YEAR BY YEAR: WHAT CHANGED
  • 2015Introduced
  • 2018Split into its own Lodge Series
FINDING ONE

Common: usually several for sale within a day’s drive. Why: Gulf Stream is a volume manufacturer; 12-year production run; still in production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Front-living lodge with a window bench and theater seats. The Trailmaster sheet swaps the hitch-weight and NCC columns relative to the Kingsport sheet (795 lb hitch / 1,582 lb NCC vs 1,582 / 795), so both the pin weight and GVWR here are less certain than usual.

OTHER TRAILMASTER FLOORPLANS
Find one for sale

Live listings for the 406FLR on the big marketplaces. Each search opens pre-filled with this exact floorplan:

Inventory varies by site and day. Slim pickings? search the whole Trailmaster line ↗

Is the 406FLR your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data low-confidence record: figures are inferred and should be independently verified, retrieved 2026-07.