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Thor Motor Coach Magnitude RB34

Class Cbuilt 2021–22Mixed build tierFindable on the used market
WHAT ONE COSTS
$144,700est. used (2022, 4 yr old)

Sticker was $241,350 in 2022. Out of production since 2022, so the used market is the only way to buy one. Estimate assumes a 2022 unit.

THE SPECS
Length35.8 ft
Height (incl. A/C)12.5 ft
Width8.3 ft
Interior height7.0 ft
GVWR19,500 lb
Dry weightnot published
Sleeps6
Slide-outs2
Fresh water65 gal
Grey water40 gal
Black water40 gal
Air conditioning30,000 BTU
Awning20 ft
Fuel68 gal
Engine / chassisFord 6.7L Power Stroke V8 turbo diesel, F-550 Super Duty
GeneratorOnan RV QD 6000 diesel

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

WHERE PEOPLE SLEEP
  • 1× Rear queen bed(Permanent)60×75
  • 2× Bunk beds that convert to a closet(Permanent)26×72
  • 1× Cab-over bunk over the truck cab(Stow-away)59×80
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyEnclosed

Thor Motor Coach (Mixed tier): Thor Magnitude Super C / Magnitude Grand

YEAR BY YEAR: WHAT CHANGED
  • 2021Introduced
  • 2022Last model year
FINDING ONE

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

OUR TAKE

Queen-bed bunkhouse on the shorter F-550 chassis with convertible bunks - works for a family or a couple.

OTHER MAGNITUDE FLOORPLANS
AX29 · 19,500 lb · sleeps 4BB35 · 19,500 lb · sleeps 8BH35 · 19,500 lb · sleeps 6BT36 · 22,000 lb · sleeps 8L35 · 22,000 lb · sleeps 4LV35 · 22,000 lb · sleeps 4R36 · 22,000 lb · sleeps 6RS36 · 22,000 lb · sleeps 8S29 · 19,500 lb · sleeps 4SV34 · 19,500 lb · sleeps 4X32 · 19,500 lb · sleeps 4XG32 · 19,500 lb · sleeps 6Z30 · 19,500 lb · sleeps 3the whole line →
Find one for sale

Live listings for the RB34 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 Magnitude line ↗

Is the RB34 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.