Used 2019 Keystone Cougar 310RLS

Beaverton, ORCurtis Trailers

Sleeps5
Length35' 4"
Dry weight10,159 lb
Slide-outs3

Questions about this 2019 Keystone Cougar 310RLS

What does it cost?

Curtis Trailers lists it at $31,994.

Is it new or used?

Used. It is a 2019 model.

Is it still for sale?

Curtis Trailers’s website listed it for sale on October 31, 2026. RV Shift checks dealers’ websites about once a day, so ask the dealer to be sure.

Where is it?

At Curtis Trailers in Beaverton, OR. See all 32 RVs Curtis Trailers lists on RV Shift.

How many people does it sleep?

The dealer lists it as sleeping 5.

How long is it?

35' 4", with 3 slide-outs, as the dealer lists it.

How much does it weigh?

The dealer lists a dry weight (empty) of 10,159 lb and a hitch weight of 2,055 lb.

What does it take to tow it?

RV Finder’s estimate: it needs a vehicle rated to tow about 11,400 lb, with a fifth-wheel hitch. That is its 10,159 lb dry weight plus 1,200 lb for water and gear, rounded up to the next 100 lb. RV Finder shows whether it is within your vehicle’s published rating, from the maker’s own towing guide, and checks tongue weight and payload too. Confirm your numbers in your owner’s manual and on the sticker in the driver’s door jamb. Check it in RV Finder

How do I ask the dealer about it?

Use the Check availability form on this page. Your message comes to RV Shift and we pass it to Curtis Trailers.

About this RV

Keystone Cougar fifth wheel 310RLS highlights: • Theater Seating • Tri-Fold Sleeper Sofa • Large Pantry • Fireplace • Kitchen Island If you are set on relaxing inside but adventuring outside then this Cougar fifth wheel 310RLS has you covered. From the tri-fold sleeper sofa, theater seating, and dinette there is plenty of room for relaxation, eating, and visiting. The dual opposing slide outs in the combined living and kitchen area plus the single slide in the bedroom provide more interior floor space to move about. The cook will appreciate the kitchen island and large pantry, and the warmth of the fireplace near by. Outside, the awning offers shade from the sun, and the unobstructed pass-through storage makes loading and unloading your larger outdoor gear a breeze. Take a look, you will be pleased you did! With any Keystone Cougar you will enjoy the Max Turn technology in the front cap when driving around town and parking the fifth wheel. You will be able to camp in any weather with the forced-air heated and enclosed underbelly with enclosed dump valves and Astrofoil insulated slide floors. If you need to stay cool or warm, these units have you covered.

Specifications as listed by the dealer

Type
Fifth wheel
Condition
Used
Year
2019
Make
Keystone
Model
Cougar 310RLS
Stock number
49337
VIN
4YDF31024K2500949
Sleeps
5
Slides
3
Length
35 ft 4 in
Ext Height
12 ft 6 in
Interior Color
Cashmere
Hitch Weight
2,055 lbs
Dry Weight
10,159 lbs
Cargo Capacity
2,291 lbs
Fresh Water Capacity
81 gals
Grey Water Capacity
76 gals
Black Water Capacity
38 gals
Tire Size
ST235/80R16E
Furnace BTU
40,500 btu
Available Beds
Queen
Refrigerator Size
12 cu ft
Cooktop Burners
3
Number of Awnings
1
LP Tank Capacity
30
Water Heater Capacity
6 gal
Water Heater Type
Rapid Recovery Gas/Electric
AC BTU
15,000 btu
TV Info
LR 50" LED HD, BR 32" LED HD
Awning Info
13'
Axle Count
2
Washer/Dryer Available
Yes
Number of LP Tanks
2
Shower Type
Shower w/Seat
Electrical Service
50 amp

Features

  • Laminated Side Walls with 5 Sided Aluminum Superstructure
  • 3/8" Walkable Roof Decking
  • Fiberglass Front Cap W/ Hitch Vision & LED Lights
  • Full Size Spare Tire
  • Cougar Vintage Maple Glazed Hardwood
  • Cabinet Doors with Residential Hardware
  • 12,000 BTU Rapid Recovery 6 Gallon Rapid Recovery Gas/Electric Water Heater
  • 16" Aluminum Wheels with 10 Ply “E” Rated Tires
  • Battery Disconnect Switch
  • LED Interior and Exterior Lighting
  • Easy Care Aluma-Tread Folding Triple Entry Step
  • Friction Hinge Entry Door
  • 12 Cubic ft. Refrigerator
  • 1.6 Cubic ft. Microwave Upgrade
  • Washer/Dryer Prep
  • 21" Drop in Range w/ Piezo Ignition and Glass Stove Top Cover
  • LG Solid Surface Counter Top Upgrade in Galley
  • Gourmet Stainless Steel Under Mount Sink with Upgraded Chef's Faucet with Sprayer
  • Upgraded Road Armour Suspension Kit
  • 15,000 BTU Ducted Air Conditioner
  • 35K BTU Ducted Furnace
  • Dual 30LB LP Tanks
  • 50 Amp Service, Pre-Wired and Braced for Ducted Bedroom Air Conditioner Option
  • 1000 CFM 4 Speed Maxx Air Exhaust Fan with Rain Sensor and Wall Mounted Controls
  • 50" LED High Definition TV in Living Area
  • 32" LED High Definition TV in Bedroom
  • 12 Volt AM/FM/CD/DVD/MP3/Bluetooth Player
  • Worry Free Omni Directional Digital TV Antenna with Booster
  • Exterior TV Hookup with TV Bracket
  • 48" Real Feel 5500 BTU Electric Fireplace with Thermostat Control and Remote
  • Furrion Backup/Observation Camera Prep
  • Furrion Portable Solar Panel Prep
  • 12 Volt USB Charging center
  • Forced-Air Heated and Enclosed Underbelly
  • Astrofoil Insulated Slide Floors
  • Astrofoil Insulated Underbelly
  • Enclosed Dump Valves
  • Full Remote Thermostat Control Including Scheduling with Mobile App
  • Available App for Android and iOS
  • Multiple Users (Android phones, One user with iOS)

Listing and photos: Curtis Trailers. Details come from the dealership and can change; confirm them before you buy.