Photo by Anshamblen15 via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Highland_Ridge_RV_-_3X_Fifth_Wheel.jpg) (CC BY-SA 4.0)
2024 Forest River Sierra 321RL
by Forest River
Full Specifications
General Info
| Manufacturer | Forest River |
| Country of Origin | USA |
| Year | 2024 |
| Category | Fifth Wheel |
| Subcategory | — |
Dimensions & Weight
| Length | 28.5 ft |
| Width | 8.5 ft |
| Height | 12.5 ft |
| Dry Weight | 10,900 lbs |
| GVWR | 14,600 lbs |
| Hitch Weight | 1,310 lbs |
| Cargo Capacity | 3,700 lbs |
Engine & Chassis
| Fuel Type | N/A |
| Engine | — |
| Chassis | — |
| Horsepower | — |
| Fuel Capacity | — |
Living & Off-Grid
| Sleeping Capacity | 9 |
| Slide-Outs | 1 |
| Awning Length | 17.5 ft |
| A/C | 15,000 BTU |
| Furnace | 20,000 BTU |
| Fridge | 2-door residential |
| Fresh Water | 76 gal |
| Gray Water | 65 gal |
| Black Water | 46 gal |
| Solar | 100 W |
| Battery | 150 Ah |
| Inverter | 2,000 W |
About the 2024 Forest River Sierra 321RL
Forest River has engineered the 2024 2024 Forest River Sierra 321RL for serious campers who want full-time livability in a towable format. The fifth wheel design provides inherent advantages in ceiling height, stability, and interior volume.
With an overall length of 28.5 feet, 8.5 feet wide and standing 12.5 feet tall, the 2024 Forest River Sierra 321RL has a dry weight of 10,900 lbs, with a GVWR of 14,600 lbs, offering 3,700 pounds for gear and supplies. With one slide-out, the interior opens up considerably at camp, creating a spacious feel.
With capacity for 9 people to sleep, this is a true family hauler. The 2024 Forest River Sierra 321RL arranges its sleeping areas across multiple zones, so parents can enjoy separation from the kids at bedtime while everyone shares the common living space during waking hours.
Off-grid capability is well supported thanks to a generous 76-gallon fresh water supply, 65 gallons of gray water holding, a 46-gallon black water tank. For electrical needs, the unit provides 100 watts of factory-installed solar, 150 amp-hours of battery storage, a 2000-watt inverter for household AC power. A 15,000 BTU air conditioner keeps things cool in summer heat, and 20,000 BTU of furnace output tackles chilly evenings. A 2-door residential refrigerator keeps provisions fresh on the road and at camp. The 17.5-foot awning creates a shaded outdoor area that becomes a favorite gathering spot at camp.
With a dry weight of 10,900 lbs, you will need a properly rated tow vehicle. and a tongue weight of 1,310 pounds that your hitch must support. Make sure your tow vehicle is rated for the 14,600-lb GVWR when fully loaded with gear and water.
With an MSRP of $158,000, the 2024 Forest River Sierra 321RL lands in premium territory with the build quality and features to justify the investment for serious RV enthusiasts. The 2024 Forest River Sierra 321RL is an excellent choice for families with children who want everyone to have their own sleeping space on camping trips without the hassle of setting up tents.
Whether you are planning weekend getaways or extended road trips, the 2024 2024 Forest River Sierra 321RL from Forest River provides a well-rounded package that deserves a spot on your shortlist. Take the time to walk through one at your nearest dealer and see how it fits your travel vision.
The 2024 Forest River Sierra 321RL proves that towable RVs can rival — and even exceed — many motorhomes in comfort, space, and amenities.
The 76-gallon fresh water system, combined with 65/46-gallon gray/black tanks, supports extended boondocking. Dual AC systems providing 15,000 BTU of cooling and a 20,000 BTU furnace ensure comfort in any climate.
Standard features include a 100-watt solar prep, 150 Ah battery bank, and 2,000-watt inverter. The 17.5-foot power awning extends the living space outdoors. Priced from $158,000, the 2024 Forest River Sierra 321RL is a compelling choice for full-time and extended-travel RVers.