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2019 Keystone Fuzion 424 Full-Time Toy Hauler Fifth Wheel with $20K+ in Upgrades (Solar, Lithium, Starlink)

Manufacturer: Keystone

Model: Fuzion 424 (first in Ambassador Program, 2021)

Year: 2019 (pre-COVID build, no structure issues)

Length: 44.5 ft

Slides: 3

Sleeps: 56 comfortably

Roof: TPO inspected, sealed, no leaks

Windows: Single Pane, excellent condition

This 2019 Keystone Fuzion 424 is a luxury toy hauler fifth wheel designed for serious travel and full-time RV living. With over $20,000 in professional upgrades, including solar, lithium batteries, suspension, Starlink, and more, it's a turnkey full-time RV you can trust to hit the road immediately.

Upgrade Overview

This isnt a stock RVits a fully customized, road-ready toy hauler built for full-time life. Over $20,000 in upgrades mean less hassle, less expense, and a fifth wheel thats already been optimized for boondocking, off-grid camping, and long-term RV travel.

Major Upgrades Include:

1,200 Watts of Solar Power (roof-mounted)

600 Amp Hours of Lithium Batteries

Starlink High-Performance (roof-mounted)

Dual 5G/4G Antennas + Pre-Wired for Peplink Router

MORryde Upgraded Suspension System

Two Brand-New Heavy-Duty Axles

Slide Skis Installed on Two Large Slides

Full Winter Skirt Included (true 4-season RV)

Upgraded Water Pump (Diaphragm System)

Residential Refrigerator & Tankless Hot Water Heater

Upgraded Propane and CO2 Monitor

Interior Highlights

Main Living Area

Custom table seating up to 8, folds down for open floor space

Ikea sofa (easy to swap/upgrade)

Smart lighting throughout for energy savings and comfort

Hidden storage behind the TV

Residential refrigerator powered by solar system

Factory warm-tone interior finish for a cozy feel

Primary Bedroom

Custom queen bed frame with improved under-bed storage

Blackout blinds for restful sleep

Rebuilt slide box (2 years ago) for durability

Projector screen installed for movie nights

Garage / Kids Bedroom

Insulated floor for comfort in all seasons

Durable vinyl plank flooring

Upgraded bed frame on electric lift

Washer/Dryer included (custom install)

Dressers included for storage

Outside & General Features

1,200W solar array + 600Ah lithium battery bank for off-grid power

Starlink High-Performance Dish included for internet anywhere

Two roof-mounted 5G antennas, pre-wired for Peplink router

Custom winter skirt included for true 4-season RV living

Tankless hot water heater for endless hot showers

5500 Cummins Onan generator as reliable backup power

Recently replaced side and rear porch doors

Vent covers installed for airflow in any weather

Upgraded CO2 and propane monitor for safety

Proven, Tested, Featured

This Fuzion was the very first Keystone Fuzion chosen for the Ambassador Program (2021), a designation highlighting top models in the lineup. It has been proven as a full-time fifth wheel home, tested on long hauls, and carefully maintained.

It has also been featured on both WhereWildOnesRoam and MobileMustHave YouTube channels, see it in action before stepping inside.

In-Depth Upgrade Notes

Solar & Lithium: 1,200 watts of panels + 600Ah lithium = serious boondocking power. Run the residential fridge, lights, and entertainment system for days without a hookup.

Starlink & Antennas: Internet matters when full-timing. This rig includes Starlink High-Performance dish plus dual 5G antennas, making it a true connected RV.

Suspension & Axles: Both axles replaced with heavy-duty units, paired with new leaf springs and MORryde suspension. A must for safe long-distance towing.

Four-Season Package: Winter skirt, insulated garage floor, and efficient heating make this a true all-weather fifth wheel.

Interior Comforts: Smart lighting, blackout blinds, and projector screen turn this RV into a home, not just a camper.

Why Buy This RV?

Most toy hauler listings look shiny but lack the $20,000+ of upgrades required for full-time RV living. Solar, lithium, suspension, and connectivity are already installed here. If youre shopping for a fifth wheel to live in, this Keystone Fuzion has the hard (and expensive) work already done.

This RV is turnkey, full-time ready, solar-powered, four-season capable, and road-proven. Just load your clothes and food, hitch up, and you're ready for your next adventure.