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Shasta Phoenix 393MBX

Fifth wheelbuilt 2024–25Mixed build tierFindable on the used market
WHAT ONE COSTS
$62,900est. used (2025, 1 yr old; from 21 priced floorplans of this line)
WHAT IT WEIGHS BEHIND YOUR TRUCK
~14,279 lbestimated as towed, for 2 people

dry weight 13,079 lb + fresh water (48 gal, full) 400 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 around15,870 lb (10% margin)
GVWR (the sticker maximum)15,500 lb
Tongue weight, loaded~2,727 lb (19%)
Cargo capacity2,421 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 393MBX's published weights changed mid-run. 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
Length42.5 ft
Height (incl. A/C)13.0 ft
Width8.0 ft
GVWR15,500 lb
Dry weight13,079 lb
Dry tongue weight2,498 lb
Cargo capacity2,421 lb
Sleeps8
Slide-outs4
Axles2
Fresh water48 gal
Grey water85 gal
Black water45 gal
Air conditioning27,000 BTU
Awning20 ft

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

WHERE PEOPLE SLEEP
  • 1× Front bedroom king(Permanent)—
  • 1× Mid bunk queen(Permanent)—
  • 2× Dinette and sofa convert(Convertible)—
HOW IT'S BUILT: 5/5
WallsAzdel composite
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Shasta (Mixed tier): Shasta

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
202414,500 lb13,079 lb—
202515,500 lb13,079 lb—
  • 2024Introduced at 14,500 lb GVWR
  • 2025GVWR raised to 15,500 lb
  • 2026Dropped
FINDING ONE

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

OUR TAKE

Mid-bunk king plan; the 2024 build had a thin cargo rating that Shasta fixed with a GVWR bump for 2025.

OTHER PHOENIX FLOORPLANS
27RKSS · 12,000 lb · sleeps 627RL · 11,431 lb · sleeps 628BH · 11,760 lb · sleeps 928RB RISE · 12,160 lb · sleeps 628RL · 12,273 lb · sleeps 6298RLS · 12,000 lb · sleeps 430RL · 12,257 lb · sleeps 631BH · 12,353 lb · sleeps 1032RE · 11,834 lb · sleeps 6334FL · 15,000 lb · sleeps 6336RL · 13,500 lb · sleeps 433CK · 14,088 lb · sleeps 834RD · 14,361 lb · sleeps 8355FBX · 14,500 lb · sleeps 8the whole line →
Find one for sale

Live listings for the 393MBX 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 Phoenix line ↗

Is the 393MBX 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.