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Forest River Cedar Creek Silverback 31IK

Fifth wheelbuilt 2020–21Mixed build tierFindable on the used market
WHAT ONE COSTS
$53,200est. used (2021, 5 yr old)

Sticker was $83,213 in 2020. Out of production since 2021, so the used market is the only way to buy one. Estimate assumes a 2021 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~12,619 lbestimated as towed, for 2 people

dry weight 11,244 lb + fresh water (69 gal, full) 575 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 around14,025 lb (10% margin)
GVWR (the sticker maximum)14,435 lb
Tongue weight, loaded~2,733 lb (22%)
Cargo capacity3,191 lb
WHICH TOW VEHICLES IT FITS: 19 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 31IK'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 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
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
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
The 76it doesn't fit

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

THE SPECS
Length35.3 ft
Height (incl. A/C)13.4 ft
Width8.0 ft
GVWR14,435 lb
Dry weight11,244 lb
Dry tongue weight2,435 lb
Cargo capacity3,191 lb
Sleeps6
Slide-outs3
Axles2
Fresh water69 gal
Grey water80 gal
Black water40 gal
Air conditioning15,000 BTU
Awning18 ft

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

WHERE PEOPLE SLEEP
  • 1× front queen bed (king optional)(Permanent)—
  • 1× sofa(Convertible)—
  • 1× freestanding table with four chairs(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Forest River (Mixed tier): Cedar Creek Division, Forest River Inc. (Topeka, IN)

YEAR BY YEAR: WHAT CHANGED
  • 2020Introduced
  • 2021Line wound down
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Forest River is a volume manufacturer; only 2 model years. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Island kitchen on a 35 ft body, added for 2020.

OTHER CEDAR CREEK SILVERBACK FLOORPLANS
29IK · 13,965 lb · sleeps 629LRLBS · 12,250 lb · sleeps 629RE · 13,985 lb · sleeps 629RK · 13,755 lb · sleeps 629RW · 14,350 lb · sleeps 630LRKSA · 14,127 lb · sleeps 630LSA · 13,962 lb · sleeps 630LSTS · 13,737 lb · sleeps 631LBHBS · 12,320 lb · sleeps 633IK · 14,067 lb · sleeps 633LBHTS · 13,830 lb · sleeps 1033LCDTS · 13,805 lb · sleeps 833RE · 13,850 lb · sleeps 633RL · 14,015 lb · sleeps 6the whole line →
Find one for sale

Live listings for the 31IK on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Cedar Creek Silverback line ↗

Is the 31IK 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 manufacturer spec sheets, retrieved 2026-07.