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Fifth Wheel · Premium · Single-Source Profile

2026 Jayco Eagle321RSTS

The rear-living flagship of the full-size Eagle fifth wheels — a king-bed slide, triple slides, two power awnings and the HELIX dual-A/C system, built for couples who want a residential coach for long stays.

Tow-Critical Data — as built, MY2026

11,145lb
Dry Weight
13,200lb
GVWR
2,055lb
Pin Weight
36ft
Length
Sleeps 4 Dual-axle Fifth Wheel · Rear-living king triple-slide flagship Built by · Jayco, Inc. Construction · Stronghold VBL™ · laminated Starting MSRP · $78,485

01 What makes it unique

The Eagle 321RSTS is the rear-living centerpiece of the full-size Eagle line. Triple slides open a wide rear living and kitchen area, a king-bed slide gives the private front bedroom a real walk-around, and two power awnings stretch the outdoor living space. This is a step up in both size and content from the Eagle HT fifth wheels — a residential coach aimed at couples who spend weeks at a time aboard.

It carries the full Eagle build: Stronghold VBL™ laminated walls, 5-Star Handling, and the industry-exclusive HELIX cooling system with two 15,000-BTU Whisper Quiet air conditioners. A 13,200-pound GVWR on an 11,145-pound dry weight leaves 2,130 pounds of payload, with a 2,055-pound dry pin weight that calls for a three-quarter-ton or larger truck. An 81-gallon fresh tank, 87-gallon gray and a 16 cubic-foot 12-volt residential refrigerator support extended off-grid-capable stays.

It sleeps four in a layout built for comfort and entertaining rather than berth count, at an MSRP near $78,000. For couples who want a full-size, feature-rich fifth wheel without stepping into the luxury North Point or Pinnacle range, the rear-living 321RSTS is the heart of the Eagle line.

02 Full specifications

Dimensions

Exterior length
36' 7"
Exterior width
8' 1"
Exterior height
12' 8"
Interior height
8' 8"

Weights

Dry / unit base weight
11,145 lbs
GVWR (max loaded)
13,200 lbs
Net cargo / payload
2,130 lbs
Dry pin weight
2,055 lbs

Capacities

Fresh water
81 gal
Grey water
87 gal
Black water
50 gal
Refrigerator
16 cu ft

Construction

Frame
Stronghold VBL™ laminated
Walls
Vacuum-bonded laminate · Azdel
Roof
Magnum Truss™ · 1-pc seamless
Underbelly
Climate Shield zero-degree · heated

Running gear

Axles
2 (tandem)
Hitch
Fifth-wheel (in-bed)
Handling
5-Star · MORryde suspension
Cooling
HELIX dual 15K · 50A

Galley & bath

Cooktop
3-burner recessed
Refrigerator
16 cu ft
A/C
HELIX dual 15K BTU "Whisper Quiet"
Water heater
Tankless on-demand · gas

Sleeping & layout

Sleeps
4
Slides
3
Hitch type
Fifth-wheel (in-bed)
Primary bed
Front king/queen

03 The Eagle floorplan family

Jayco's Eagle is the brand's premium towable family, and it splits three ways. The full-size Eagle is the flagship fifth wheel — Stronghold VBL™ laminated walls, 5-Star Handling, the HELIX dual-15,000-BTU cooling system and a 16 cubic-foot residential refrigerator. The Eagle HT ("half-ton") line is engineered to be towable by a properly equipped half-ton truck, and Jayco offers it as both a fifth wheel and a travel trailer — lighter, 4-Star Handling with Goodyear Endurance tires, and lower pin or tongue weights. The 321RSTS on this page is highlighted; each other profiled plan links to its own page. The full Eagle catalogue runs to dozens of floorplans across all three; the highest-demand layouts are detailed here and the rest are catalogued on the line hub.

FloorplanFamilyTypeNominalSleepsNotable
265FKDSEagle HTTT32 ft2Front-kitchen couples, dual slide
294CKBSEagle HTTT38 ft4Center-kitchen triple-slide, rear bath
312BHOKEagle HTTT39 ft8Bunkhouse + outside kitchen, triple slide
27MLCEagle HT5W33 ft2Shortest half-ton 5W, mid-living
29RLCEagle HT5W34 ft4Rear-living dual-slide half-ton 5W
321RSTSEagle5W37 ft4Rear-living king triple-slide flagship
355MBQSEagle5W42 ft10Mid-bunk/den + loft, quad slide
370FBTSEagle5W41 ft4Front-bath bath-and-a-half full-timer

The full-size Eagle is offered only as a fifth wheel. Above it sit Jayco's luxury North Point and Pinnacle fifth wheels; below it, the half-ton Eagle HT line in both fifth-wheel and travel-trailer form. Eagle fifth-wheel pin weights are factory dry figures from Jayco's 2026 brochure and climb with cargo — always weigh the loaded coach and confirm your truck's payload, rear-axle and hitch ratings. Additional Eagle floorplans are catalogued on the line hub.

04 What owners & reviewers report

Residential rear living

Triple slides, a king-bed slide and two awnings make it a long-stay coach for two — the flagship Eagle layout.

HELIX dual cooling

Two 15,000-BTU Whisper Quiet units on the HELIX system keep a large fifth wheel comfortable in real heat.

Big tanks, big fridge

An 81-gallon fresh, 87-gallon gray and 16 cu ft residential refrigerator suit extended stays.

Needs a 3/4-ton truck

A 2,055-lb dry pin and 13,200-lb GVWR put it beyond half-ton territory — plan on a 3/4-ton or larger.

SOURCING — ownership notes to be expanded with cited threads from owner communities & forums per the data plan

05 How it compares

↓ Step down
Eagle HT 29RLC

The half-ton rear-living fifth wheel — lighter and lower-pin, if a 3/4-ton truck isn’t available.

↑ Step up
Eagle 370FBTS

A front-bath, bath-and-a-half full-timer layout — more living and bath space for extended use.

↔ Cross-shop
Keystone Cougar 316RLS

Keystone’s iconic rear-living full-size fifth wheel — the direct cross-brand rival.