2026 Thor Quantum for Sale

The Quantum is Thor Motor Coach's step-up Ford E-Series Class C, pitched as combining large Class A-style amenities with the easier driving and more compact size of a Class C. Built on the Ford E-Series cutaway, it spans from the just-over-20-foot LC19 — which Thor says parks like a car — up past 31 feet across plans like the LC21, LZ22, LZ28, KW29, and LF31/HS31. Compared with the Four Winds and Chateau, the Quantum leans toward a more finished, residential interior with collections like Seabreeze & Harbor and Highland Tweed & Cali, and select plans add SmoothTech ride enhancement and overhead bunks. The result is a Class C that feels a notch more put-together inside while keeping the van-based drivability and reasonable price that make the format approachable. It is still a volume Thor product, so the brand's quality and service cautions hold, but for a buyer who wants Class C maneuverability with a slightly nicer cabin, the Quantum is a sensible middle ground — and a used one can be a strong value.

Looking for a Thor Quantum for sale?

You're in the right place. We don't sell the Quantum off a lot — we work for you, find the cleanest one on the market new or used, inspect it, and negotiate it. Below is everything you need to know before you shop: the real specs, every floor plan, the photos, what it tends to sell for, and a straight read on what owners love and what they grumble about.