Top pick
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,332Short Queen - 60x74 · list priceSee price
Thor Quantum KM24 mattress size
Main bed60 × 74 inRV short queen
That's an RV short queen, 6 in shorter than a regular queen. A regular queen would hang off the end, so get an RV short queen.
About the RV short queen size →Thor spec sheet, 2021.
Bunks52 × 87 in
Bunk. Thor spec sheet, 2021.
Common RV bunk sizes →
Mattresses in 60 × 74 in
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Best value
Mattress InsiderElation Gel Foam
- Memory foam
- 6 in thick
- cushion firm
$45960" x 74" · list priceSee price
Reviewers' favorite
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$1,865Short Queen - 60x74 · list priceSee price
Best memory foam
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
$79960" x 74" · list priceSee price
Best hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$799Short Queen - 60x74 · list priceSee price
Best all-foam
RVMattress.comPlank Firm
- All-foam
- 10 in thick
- Firm / Extra Firm
Mattress Clarity: Best RV Mattress for Heavy People Read review
$1,332Short Queen - 60x74 · list priceSee price
Reviewer pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,183Short Queen · list priceSee price
Reviewer pick
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
$66960" x 74" · list priceSee price
Bunk mattresses in 52 × 87 in
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Custom size
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 52 × 87 inGet a quote
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2020 | 60 × 74 in Queen | 52 × 87 in | – | Thor spec sheet |
| 2021 | 60 × 74 in Queen | 52 × 87 in | – | Thor spec sheet |
Years not listed weren't published.
The KM24 floorplan
Thor's 2021 KM24 floorplan.
Is this your KM24?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2020 | Quantum Sprinter KM24 | 24'-8" | – |
| 2021 | Quantum Sprinter KM24 | 24'-10" | – |
Other Quantum mattress sizes
Sources
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/97a0d79ef40d446/original/c7ac2de7-e247-4203-9f77-aee8f1a66cbc_2020-quantum-digital-brochure-oh-spreads-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/5fd680465ea7fa87/original/1ee02cdd-e1c5-405d-aae9-bee064c27953_2021-oh-quantum-web-pdf.pdf
Questions
What size mattress is in the Thor Quantum KM24?
The main bed is 60 × 74 in (Thor spec sheet, 2021).
Will a regular queen mattress fit the Thor Quantum KM24?
No. The platform is 60 × 74 in, an RV short queen. A home queen is 60 × 80 in and hangs off the end.
What size are the Thor Quantum KM24 bunk mattresses?
52 × 87 in (Thor spec sheet, 2021).