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Keystone Montana 3100RL

Fifth wheelbuilt 2026– (in production)Mixed build tierFindable on the used market
WHAT ONE COSTS
$160,300MSRP today

Still in production. A used 2023 would run roughly $94,600.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~16,472 lbestimated as towed, for 2 people

dry weight 15,030 lb + fresh water (77 gal, full) 642 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 around18,305 lb (10% margin)
GVWR (the sticker maximum)19,000 lb
Tongue weight, loaded~3,288 lb (20%)
Cargo capacity3,970 lb
WHICH TOW VEHICLES IT FITS: 15 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 3100RL's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
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 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
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 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
Ram 2500 (6.7 Cummins HO) '19-2620,000 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
The 80it doesn't fit

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

THE SPECS
Length35.9 ft
Height (incl. A/C)13.3 ft
GVWR19,000 lb
Dry weight15,030 lb
Dry tongue weight3,000 lb
Cargo capacity3,970 lb
Sleeps4
Slide-outs3
Fresh water77 gal
Grey water100 gal
Black water50 gal
Air conditioning18,000 BTU
Solar (standard)220 W

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

WHERE PEOPLE SLEEP
  • front bedroom king (60×80 queen available)(Permanent)60×80
  • theater seating / tri-fold hide-a-bed sofa(Convertible)
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Keystone (Mixed tier): Keystone's flagship — the best construction in the Keystone stable (laminated walls, aluminum frame, long structural warranty), but Thor-era QC inconsistency keeps the line at mixed.

YEAR BY YEAR: WHAT CHANGED
  • 2026Introduced with the redesigned Montana on the heavier 19,000 lb chassis
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Keystone is a volume manufacturer; only one model year; still in production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Shortest of the 2026-redesign Montanas; rear living, 3,970 lb of cargo capacity.

OTHER MONTANA FLOORPLANS
Find one for sale

Live listings for the 3100RL on the big marketplaces. Each search opens pre-filled with this exact floorplan:

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

Is the 3100RL 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 compiled from dealer and aggregator listings, retrieved 2026-07.