Keystone Fuzion 425

Name: Keystone Fuzion 425
Brand: Keystone

Fifth wheelbuilt 2024–25Mixed build tierFindable on the used market

WHAT ONE COSTS

$103,300est. used (2025, 1 yr old)

Sticker was $143,473 in 2025. Out of production since 2025, so the used market is the only way to buy one. Estimate assumes a 2025 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK

~18,304 lbestimated as towed, for 2 people

dry weight 16,720 lb + fresh water (94 gal, full) 784 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 around20,340 lb (10% margin)

GVWR (the sticker maximum)20,000 lb

Tongue weight, loaded~4,165 lb (23%)

Cargo capacity3,280 lb

WHICH TOW VEHICLES IT FITS: 13 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 425's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLE	TOW RATING	VERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-26	22,500 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-26	36,000 lb	fits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-19	23,300 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-22	22,800 lb	fits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-26	23,000 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-19	32,500 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-22	37,000 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-16	21,600 lb	fits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-26	38,000 lb	fits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-26	40,000 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-18	31,210 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-26	36,610 lb	fits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-24	37,090 lb	fits, loaded, with 10% margin

The 82it doesn't fit

Chevrolet Colorado / GMC Canyon (2.7 Turbo HO, tow pkg) '23-26: over by ~11,374 lb loaded
Chevrolet Colorado / GMC Canyon (2.8 Duramax) '15-22: over by ~11,374 lb loaded
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-26: over by ~9,034 lb loaded
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-23: over by ~1,644 lb loaded
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-19: over by ~2,014 lb loaded
Chevrolet Silverado 1500 (max tow) '14-18: over by ~7,864 lb loaded
Chevrolet Silverado EV (4WT) '24-26: over by ~7,054 lb loaded
Chevrolet Suburban (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
Chevrolet Tahoe (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
Chevrolet Traverse (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
Chrysler Pacifica '17-26: no pickup bed (cannot hitch a fifth wheel)
Dodge Durango (5.7 / 6.4 Hemi, tow pkg) '14-26: no pickup bed (cannot hitch a fifth wheel)
Ford Bronco 4-dr (2.7 EcoBoost, tow pkg) '21-26: no pickup bed (cannot hitch a fifth wheel)
Ford Expedition (3.5 EcoBoost, tow pkg) '25-26: no pickup bed (cannot hitch a fifth wheel)
Ford Expedition (3.5 EcoBoost, tow pkg) '18-24: no pickup bed (cannot hitch a fifth wheel)
Ford Explorer (3.0 EcoBoost, tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Ford F-150 (3.5 EcoBoost, max tow) '24-26: over by ~8,584 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '15-20: over by ~7,594 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '21-23: over by ~5,704 lb loaded
Ford F-150 (3.5 EcoBoost, max tow) '11-14: over by ~8,134 lb loaded
Ford F-150 Lightning (max trailer tow) '22-26: over by ~9,304 lb loaded
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-19: over by ~2,104 lb loaded
Ford F-250 Super Duty (6.7 diesel) '11-16: over by ~3,364 lb loaded
Ford Maverick (2.0 EcoBoost, 4K tow pkg) '22-26: over by ~14,704 lb loaded
Ford Ranger (2.3 EcoBoost, tow pkg) '19-23: over by ~11,554 lb loaded
Ford Ranger (2.7 EcoBoost, tow pkg) '24-26: over by ~11,554 lb loaded
Ford Transit (HD tow pkg) '15-26: no pickup bed (cannot hitch a fifth wheel)
GMC Acadia (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
GMC Hummer EV Pickup '22-26: over by ~11,554 lb loaded
GMC Sierra EV '24-26: over by ~7,504 lb loaded
GMC Yukon / Yukon XL (5.3 V8, max tow) '21-26: no pickup bed (cannot hitch a fifth wheel)
Honda Odyssey '18-26: no pickup bed (cannot hitch a fifth wheel)
Honda Passport (AWD) '19-26: no pickup bed (cannot hitch a fifth wheel)
Honda Pilot (AWD, tow pkg) '16-26: no pickup bed (cannot hitch a fifth wheel)
Honda Ridgeline (AWD) '17-26: over by ~13,804 lb loaded
Hyundai Palisade (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Hyundai Santa Cruz (2.5T AWD) '22-26: over by ~13,804 lb loaded
Jeep Gladiator (3.6 V6, max tow) '20-26: over by ~11,374 lb loaded
Jeep Grand Cherokee (5.7 Hemi) '11-21: no pickup bed (cannot hitch a fifth wheel)
Jeep Grand Cherokee (WL, tow pkg) '22-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Grand Cherokee L (5.7 Hemi) '21-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Grand Wagoneer (Hurricane, max tow) '22-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Wagoneer (Hurricane, max tow) '22-26: no pickup bed (cannot hitch a fifth wheel)
Jeep Wrangler Unlimited 4-dr (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)
Kia Telluride (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Land Rover Defender '20-26: no pickup bed (cannot hitch a fifth wheel)
Land Rover Discovery '17-26: no pickup bed (cannot hitch a fifth wheel)
Lexus GX 550 (tow pkg) '24-26: no pickup bed (cannot hitch a fifth wheel)
Lexus LX 600 '22-26: no pickup bed (cannot hitch a fifth wheel)
Mazda CX-90 (3.3 turbo, tow pkg) '24-26: no pickup bed (cannot hitch a fifth wheel)
Mercedes-Benz Sprinter '19-26: no pickup bed (cannot hitch a fifth wheel)
Nissan Armada (3.5 twin-turbo, tow pkg) '25-26: no pickup bed (cannot hitch a fifth wheel)
Nissan Armada (tow pkg) '17-24: no pickup bed (cannot hitch a fifth wheel)
Nissan Frontier (3.8 V6, tow pkg) '22-26: over by ~11,869 lb loaded
Nissan Pathfinder (tow pkg) '22-26: no pickup bed (cannot hitch a fifth wheel)
Nissan Titan (5.6 V8, tow pkg) '17-24: over by ~9,519 lb loaded
Nissan Titan XD (Cummins diesel) '16-19: over by ~6,864 lb loaded
Ram 1500 (3.0 Hurricane, max tow) '25-26: over by ~7,854 lb loaded
Ram 1500 (5.7 Hemi eTorque, max tow) '19-24: over by ~6,829 lb loaded
Ram 1500 (5.7 Hemi, max tow) '11-18: over by ~8,744 lb loaded
Ram 2500 (6.7 Cummins HO) '19-26: over by ~304 lb loaded
Ram 2500 (6.7 Cummins) '11-18: over by ~2,124 lb loaded
Ram ProMaster '14-26: no pickup bed (cannot hitch a fifth wheel)
Rivian R1S '22-26: no pickup bed (cannot hitch a fifth wheel)
Rivian R1T '22-26: over by ~8,404 lb loaded
Subaru Ascent '19-26: no pickup bed (cannot hitch a fifth wheel)
Subaru Outback (XT / Wilderness) '20-26: no pickup bed (cannot hitch a fifth wheel)
Tesla Cybertruck '24-26: over by ~8,404 lb loaded
Tesla Model X (tow pkg) '16-26: no pickup bed (cannot hitch a fifth wheel)
Tesla Model Y (tow pkg) '21-26: no pickup bed (cannot hitch a fifth wheel)
Toyota 4Runner (4.0 V6) '11-24: no pickup bed (cannot hitch a fifth wheel)
Toyota 4Runner (i-Force Max) '25-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Grand Highlander (i-Force Max) '24-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Highlander (tow pkg) '20-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Land Cruiser (i-Force Max) '24-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Sequoia (i-Force Max, tow pkg) '23-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Sienna '21-26: no pickup bed (cannot hitch a fifth wheel)
Toyota Tacoma (i-Force Max, tow pkg) '24-26: over by ~12,454 lb loaded
Toyota Tacoma (V6, tow pkg) '16-23: over by ~12,184 lb loaded
Toyota Tundra (5.7 V8, tow pkg) '11-21: over by ~9,124 lb loaded
Toyota Tundra (i-Force Max, tow pkg) '22-26: over by ~7,504 lb loaded
Volkswagen Atlas (tow pkg) '18-26: no pickup bed (cannot hitch a fifth wheel)

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

THE SPECS

Length44.9 ft

Height (incl. A/C)13.4 ft

Width8.3 ft

GVWR20,000 lb

Dry weight16,720 lb

Dry tongue weight3,805 lb

Cargo capacity3,280 lb

Sleeps8

Axles3

Fresh water94 gal

Grey water88 gal

Black water88 gal

Awning18 ft

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

WHERE PEOPLE SLEEP

1× Front king bed suite(Permanent)—
2× Garage electric beds(Stow-away)—
2× Garage flip-down sofas(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameAluminum

RoofWalk-on

UnderbellyEnclosed

Keystone (Mixed tier): Keystone RV

YEAR BY YEAR: WHAT CHANGED

2024Documented in the 2024 brochure
2025Carried over unchanged at 16,720 lb

FINDING ONE

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

OUR TAKE

Heaviest 2024 Fuzion, with the largest patio awning of the year at 18 feet.

OTHER FUZION FLOORPLANS

3120 · 16,670 lb · sleeps 8 337 · 16,900 lb · sleeps 8 3423 · 16,745 lb · sleeps 8 343 · 16,900 lb · sleeps 8 359 · 16,880 lb · sleeps 8 361LT · 15,800 lb · sleeps 8 367 · 16,615 lb · sleeps 8 369 · 17,000 lb · sleeps 8 373 · 19,745 lb · sleeps 8 379 · 17,000 lb · sleeps 8 415 · 19,000 lb · sleeps 8 418 · 18,362 lb · sleeps 8 419 · 21,000 lb · sleeps 8 421 · 20,000 lb · sleeps 8 the whole line →

Find one for sale

Live listings for the 425 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 Fuzion line ↗

Is the 425 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.