CamperHardlyKnowHer

Thor Motor Coach Quantum LC21

Class Cbuilt 2025– (in production)Mixed build tierFindable on the used market
WHAT ONE COSTS
$127,700MSRP today

Still in production — a used 2023 would run roughly $88,100.

THE SPECS
Length24.1 ft
Height (incl. A/C)11.0 ft
Width8.3 ft
Interior height7.0 ft
GVWR12,500 lb
Dry weightnot published
Sleeps4
Fresh water40 gal
Grey water37 gal
Black water24 gal
Awning15 ft
Fuel55 gal
Engine / chassisFord E-350 7.3L V8 (Chevy 6.6L alt.)
Generator4.0 kW dual gas/LP

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

WHERE PEOPLE SLEEP
  • 1× rear corner full bed(Permanent)54×80
  • 1× cab-over bunk(Permanent)52×91
  • 1× 76 in dream dinette(Convertible)—
HOW IT'S BUILT — 3/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyOpen

Thor Motor Coach (Mixed tier): Thor Motor Coach

YEAR BY YEAR — WHAT CHANGED
  • 2025Introduced
FINDING ONE

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

THE READ

Cheapest way into a 24 ft Quantum with a real corner bed and corner bath.

OTHER QUANTUM FLOORPLANS
CR24 · 11,030 lb · sleeps 5DS24 · 11,030 lb · sleeps 3GL24 · 12,125 lb · sleeps 4GR22 · 12,500 lb · sleeps 5HS31 · 14,500 lb · sleeps 5JM31 · 14,500 lb · sleeps 5KM24 · 11,030 lb · sleeps 5KW29 · 14,500 lb · sleeps 5LC19 · 11,500 lb · sleeps 3LC22 · 12,500 lb · sleeps 5LC25 · 12,500 lb · sleeps 5LC26 · 14,500 lb · sleeps 5LC28 · 14,500 lb · sleeps 5LF31 · 14,500 lb · sleeps 7the whole line →
Is the LC21 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 and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

Data compiled from manufacturer spec sheets, retrieved 2026-07.