2023 Sprinter 3500XD AWD | Pikes Peak Tested | 4-Season Off-Grid | High Payload Platform | Transferable Warranty | $129K

A Pikes Peak-tested, fully integrated off-grid expedition platform built on the Sprinter 3500XD chassis, offering significantly higher payload and towing capability than many 2500 builds.

Ready for Baja to Alaska travel, snowmobiling, dirt biking, and extended off-grid use with no build time required.

OVERVIEW

Grey Swan Stealth One is a fully integrated off-grid expedition van designed for durability, range, and real-world usability.

The exterior is intentionally low-profile, with minimal visual indicators of the build, allowing it to remain discreet in both urban and remote environments.

Tested at elevation and across varied conditions, this platform is configured for long-distance travel and extended off-grid living.

POWER PLATFORM

• EcoFlow Delta Pro

• EcoFlow manufacturer warranty through January 2029

• 200W stealth roof solar installed

• Expandable to 400W roof portable ground solar input

Modular and expandable platform:

• Base capacity ~3.6 kWh

• Expandable to 25 kWh depending on configuration

System performance depends on usage, conditions, and total load.

OFF-GRID PERFORMANCE

• Goal Zero Alta 50 fridge

• Typical power draw: ~40–60W per hour while cycling

• Designed for efficient off-grid refrigeration

• Performance varies based on ambient temperature and usage

• Low-profile rooftop AC system (off-grid capable)

• Fan-only mode: ~50–100W per hour

• Moderate cooling: ~700–900W per hour

• High cooling load: ~1,000–1,200W per hour

• Designed for efficient cooling with minimal roof profile

• Power usage varies based on outside temperature, insulation, and settings

WATER PLATFORM

• ~60 gallons total capacity

• Hot and cold water system

• Sink with shower capability

• Manual backup pump installed — ensures water access in all conditions

CLIMATE CONTROL

• 13K diesel heater

• Startup draw higher, then ~10–40W per hour during operation

• Low-profile rooftop AC system

• Fully insulated and sound-treated

Built for four-season use.

INTERIOR FUNCTIONALITY

• Swivel front seats

• Refrigerator system

• Cooking plate included

• Integrated composting toilet

• Clean, durable layout designed for real use

SLEEP STORAGE

• Flatline Van Co wall-mounted bed supports

• Overhead Flatline Van Co cabinets (installed by Converted Vans)

• Large rear garage space

• Pull-out rear tray system for gear access

EXTERIOR BUILD

• Flatline Van Co low-profile roof rack

• Side ladder

• Clean, low-profile exterior

• Designed to remain discreet in both urban and remote environments

WHEELS TIRES

• 32-inch Toyo Open Country A/T III all-terrain tires

• 3-Peak Mountain Snowflake rated

• Designed for highway stability and off-road durability

• Manufacturer treadwear warranty up to ~50,000 miles (LT configuration)

Approximately 40,000 miles remain on the manufacturer treadwear warranty.

PROFESSIONAL BUILD

Key systems installed by Converted Vans, including:

• EcoFlow power integration

• Electrical system

• Heater and AC

• Water system (fresh grey)

• Refrigerator system

• Interior cabinetry

• Tow hitch installation

PLATFORM CAPABILITY

Built on the Sprinter 3500XD heavy-duty platform:

• Higher GVWR than 2500 AWD models, supporting increased payload capacity

• Typical towing capacity ranges from ~7,500–10,000 lbs depending on configuration

• Tow hitch installed (~13,000 lb rated system)

This configuration supports hauling trailers, snowmobiles, dirt bikes, and extended gear setups.

All specifications va