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KZ Venom 3815RG

Fifth wheelbuilt 2023–24Mixed build tierFindable on the used market
WHAT ONE COSTS
$97,200est. used (2024, 2 yr old; from 8 priced floorplans of this line)
WHAT IT WEIGHS BEHIND YOUR TRUCK
~15,054 lbestimated as towed, for 2 people

dry weight 13,420 lb + fresh water (100 gal, full) 834 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 around16,730 lb (10% margin)
GVWR (the sticker maximum)19,000 lb
Tongue weight, loaded~2,917 lb (19%)
Cargo capacity5,580 lb
WHICH TOW VEHICLES IT FITS: 18 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 3815RG'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 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 77it doesn't fit

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

THE SPECS
Length42.8 ft
Height (incl. A/C)13.3 ft
Width8.4 ft
GVWR19,000 lb
Dry weight13,420 lb
Dry tongue weight2,600 lb
Cargo capacity5,580 lb
Sleeps8
Slide-outs3
Axles3
Fresh water100 gal
Grey water50 gal
Black water90 gal
Air conditioning30,000 BTU
Awning14 ft

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

WHERE PEOPLE SLEEP
  • 1× Electric tilt king bed (optional 60×80 queen)(Permanent)70×80
  • 1× Loft bed over the garage(Permanent)40×96
  • 1× Power bed with Sit-and-Sleep, standard on this edition(Permanent)60×84
  • 1× Super sofa theater seating(Convertible)—
HOW IT'S BUILT: 5/5
WallsAzdel composite
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

KZ (Mixed tier): Venom was KZ's flagship fifth-wheel toy hauler (Thor Industries), built with aluminum-framed laminated sidewalls over Azdel composite, a walk-on roof and a heated, enclosed underbelly, and specified like a race hauler — 100+ gallon fresh tanks, dual 30-gallon fuel stations, generators and 88×96 cargo doors. The engineering is above the segment average but these are 13,000-15,000 lb trailers with heavy slide and suspension loads, and owner reports of slide, frame-flex and delamination problems are common enough to keep it out of the top tier. Absent from the 2025 lineup.

YEAR BY YEAR: WHAT CHANGED
  • 2023Introduced as a Robby Gordon Speed UTV limited edition
  • 2025Line discontinued
FINDING ONE

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

OUR TAKE

Robby Gordon Speed UTV limited edition of the V3815TK — 15' garage sized around a Speed UTV, with the power bed standard.

OTHER VENOM FLOORPLANS
3916RG · 19,000 lb · sleeps 8V3214DK · 14,995 lb · sleeps 8V3311TQ · 16,000 lb · sleeps 6V3313TK · 16,000 lb · sleeps 8V3411TK · 16,000 lb · sleeps 8V3413TK · 16,000 lb · sleeps 8V3517DK · 14,995 lb · sleeps 6V3815TK · 19,000 lb · sleeps 8V3911TK · 19,000 lb · sleeps 9V3912TK · 19,000 lb · sleeps 8V3916TK · 19,000 lb · sleeps 8V4011QK · 19,000 lb · sleeps 8V4012TK · 19,000 lb · sleeps 9V4013TK · 19,000 lb · sleeps 8the whole line →
Find one for sale

Live listings for the 3815RG 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 Venom line ↗

Is the 3815RG 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.