Keystone Bullet 21BHC mattress size
Years 2026–2027Sold as Bullet ClassicLength 25 ft 4 inSleeps 6
Bunk mattresses in 51 × 74 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 InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
The 21BHC floorplan

Keystone's 2027 21BHC floorplan.
Is this your 21BHC?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
| 2026 | Bullet Classic 21BHC | 25 ft 4 in | 6 |
| 2027 | Bullet Classic 21BHC | 25 ft 4 in | 6 |
Other Bullet mattress sizes
Questions
What size are the Keystone Bullet 21BHC bunk mattresses?
51 × 74 in (Dealer report, 2027).