Skip to main contentSkip to navigation
RV Envy
RV floor plans
Inventory
Sell your RV
Dealers
RV EnvyPro
  • Class A motorhomes
  • Class C motorhomes
  • Class B vans
  • Fifth wheel trailers
  • Travel trailers
  • Pop-up campers
  • Advanced search
  • Floor plan wizard
  • Inventory

Browse popular layouts & features

Class A motorhomes

  • … with bunk beds
  • … with two bedrooms
  • … with bath and a half
  • … with two full bathrooms
  • … with bunk over cab
  • … with rear bathroom
Browse all features →

Class B vans

  • … with King size bed
  • … with rear twin beds
  • … with Murphy bed
  • … with rear bathroom
  • … with dual twin beds
Browse all features →

Class C motorhomes

  • … with bunk over cab
  • … with bunk beds
  • … with rear bathroom
  • … with rear twin beds
  • … with Murphy bed
  • … with outdoor kitchen
  • … with outdoor TV
Browse all features →

Fifth wheel trailers

  • … with bath and a half
  • … with two bathrooms
  • … with bunk beds
  • … with two bedrooms
  • … with side patio
  • … with rear patio
  • … with outdoor kitchen
  • … with washer/dryer
  • … with front living
Browse all features →

Travel trailers

  • … with bunk beds
  • … with two bedrooms
  • … with Murphy bed
  • … with outdoor kitchen
  • … with rear bath
  • … with front bedroom
Browse all features →

Popup campers

  • under $10k
  • under $15k
  • under 2,000 lbs
  • under 3,000 lbs
Browse all features →

RV dealers by metro area

Los AngelesDallas–Fort WorthHoustonAtlantaPhoenixTampa BayOrlandoDenverChicagoSeattleNashvilleTorontoBrowse all metro areas →

Explore

  • RV floor plans
  • Browse inventory
  • Sell your RV
  • Dealers
  • Shopping tips

Company

  • About
  • Our story
  • Contact

Services

  • Dealer leads
  • Dealer websites & CRM
  • OEM advertising
  • Shopper insights

Join our mailing list

We don't send much, but you won't want to miss it!

By subscribing, you agree to receive RV Envy newsletters and personalized recommendations by email. You can unsubscribe or change your preferences at any time.

RV Envy

The RV search engine. Find your dream RV.

We do our best to keep listing details accurate, but pricing, specifications, and availability come from third-party sources and can change without notice. We can't guarantee accuracy, so please confirm the details with the dealer before making any decisions. See something inaccurate? Contact us.

© 2026 RV Envy. All rights reserved.

For AI agentsPrivacyTerms
Dashboard
    1. Home
    2. Inventory
    3. Optimum RV
    4. Spartanburg, SC
    5. 2020 Keystone Cougar 353SRX

    2020 Keystone Cougar 353SRX

    UsedFifth wheel|Stock #5PR883A|Located at Optimum RV in Spartanburg, SC
    $62,995$34,999
    Save $27,996
    RV Envy

    2020 Keystone Cougar 353SRX

    Used · Fifth wheel

    $62,995$34,999Save $27,996

    Optimum RV – Spartanburg

    9600 Ashville Hwy

    Inman, SC 29349

    (864) 239-8820

    Stock #5PR883A

    2020 Keystone Cougar 353SRX floor plan

    Specifications

    Length38 ft 11 in
    Dry weight11,405 lbs
    Sleeps6 people
    Slideouts3

    Key features

    • • Bath and a Half
    • • Front Bedroom
    • • Toy Hauler
    • • Two Entry/Exit Doors

    Full specifications

    Available BedsQueen
    Axle Count2
    Black Water Capacity76 gal
    Cargo Weight4,995
    Dry Weight11,405
    Electrical Service50
    Fresh Water Capacity81 gal
    Furnace BTU35,000
    Garage Size120
    Grey Water Capacity76 gal
    Height13.4 ft
    Hitch Weight2,425
    Length38.9 ft
    Number of Awnings3
    Refrigerator Size12
    Shower TypeRadius
    Sleeps6
    Slides3
    TV InfoLR 50"" LED HDTV
    Tire SizeST235/80R16F
    Washer/Dryer AvailableTrue

    Options and equipment may differ from those listed. We do our best to ensure accuracy, but please confirm all details with the dealer before purchase.

    Get more info

    2020 Cougar 353SRX

    2020 Cougar 353SRX
    I'm interested in
    Preferred contact method
    EmailPhone callText message

    The dealer sees only your first name and general area, not your full name, email, or phone. You'll chat through RV Envy and can share your info anytime.

    By sending this inquiry, you agree to receive buyer follow-up and RV shopping emails from RV Envy. You can unsubscribe or change your preferences at any time.

    Dealer information

    Optimum RV – Spartanburg

    9600 Ashville Hwy
    Inman, SC 29349
    (864) 239-8820

    Pricing report

    Current price

    $34,999

    used

    Price history

    This unit has seen 2 price adjustments. RV Envy Pro lets you see the full price history.

    Pricing report

    Current price

    $34,999

    used

    Price history

    This unit has seen 2 price adjustments. RV Envy Pro lets you see the full price history.

    Keystone Cougar toy hauler 353SRX highlights:

    • Patent-Pending Windshield
    • Full and Half Bath
    • Dual Entry
    • Patio Deck
    • Fireplace
    • Rear Awning

    Stay away for as long as you like with this Cougar toy hauler! Not only will you be able to bring along your large camping gear in the unobstructed pass-through storage compartment, but you will also be able to bring along your toys because of the 10' separate garage in the back. And the ramp door turns into a patio deck with magnetic screen and rear awning which makes it the perfect place to host a get-together for you and your friends.  There is a handy side man door, dual sofas, a washer/dryer prepped space, and a half bathroom adjacent to the garage.  The combined living and kitchen area offers everything you will need to be comfortable from the counter peninsula, all the appliances, and the sofa with recliners and a table, plus you will have your own full bathroom and master suite.

    You won't find anything else quite like the Cougar fifth wheels and toy hauler from Keystone RV! Quality construction, stylish features, and technological innovation are just a part of what makes the Cougar a best-selling brand. You'll find an exclusive 90-degree Maxturn technology which enables you to maneuver better than ever, and the iN Command Pro Series master control panel gives you complete control over the power, slides, awnings, HVAC, and more. You will especially appreciate the heated and enclosed underbelly, which is a part of Keystone's Climate Guard protection, because it will make it possible to vacation any time of the year. And don't forget about the 81-gallon fresh water tank which will allow you to carry more fresh water so that you can stay away longer.

    Keystone Cougar toy hauler 353SRX highlights:

    • Patent-Pending Windshield
    • Full and Half Bath
    • Dual Entry
    • Patio Deck
    • Fireplace
    • Rear Awning

    Stay away for as long as you like with this Cougar toy hauler! Not only will you be able to bring along your large camping gear in the unobstructed pass-through storage compartment, but you will also be able to bring along your toys because of the 10' separate garage in the back. And the ramp door turns into a patio deck with magnetic screen and rear awning which makes it the perfect place to host a get-together for you and your friends.  There is a handy side man door, dual sofas, a washer/dryer prepped space, and a half bathroom adjacent to the garage.  The combined living and kitchen area offers everything you will need to be comfortable from the counter peninsula, all the appliances, and the sofa with recliners and a table, plus you will have your own full bathroom and master suite.

    You won't find anything else quite like the Cougar fifth wheels and toy hauler from Keystone RV! Quality construction, stylish features, and technological innovation are just a part of what makes the Cougar a best-selling brand. You'll find an exclusive 90-degree Maxturn technology which enables you to maneuver better than ever, and the iN Command Pro Series master control panel gives you complete control over the power, slides, awnings, HVAC, and more. You will especially appreciate the heated and enclosed underbelly, which is a part of Keystone's Climate Guard protection, because it will make it possible to vacation any time of the year. And don't forget about the 81-gallon fresh water tank which will allow you to carry more fresh water so that you can stay away longer.

    Specifications

    Length

    38 ft 11 in

    Dry weight

    11,405 lbs

    Sleeps

    6 people

    Slideouts

    3

    Specifications

    Length

    38 ft 11 in

    Dry weight

    11,405 lbs

    Sleeps

    6 people

    Slideouts

    3

    Download brochure
    Download brochure

    Key features

    • Bath and a Half
    • Front Bedroom
    • Toy Hauler
    • Two Entry/Exit Doors

    Key features

    • Bath and a Half
    • Front Bedroom
    • Toy Hauler
    • Two Entry/Exit Doors

    Full specifications

    As provided in the original listing

    Available BedsQueen
    Axle Count2
    Black Water Capacity76 gal
    Cargo Weight4,995
    Dry Weight11,405
    Electrical Service50
    Fresh Water Capacity81 gal
    Furnace BTU35,000
    Garage Size120
    Grey Water Capacity76 gal
    Height13.4 ft
    Hitch Weight2,425
    Length38.9 ft
    Number of Awnings3
    Refrigerator Size12
    Shower TypeRadius
    Sleeps6
    Slides3
    TV InfoLR 50"" LED HDTV
    Tire SizeST235/80R16F
    Washer/Dryer AvailableTrue

    Full specifications

    As provided in the original listing

    Available BedsQueen
    Axle Count2
    Black Water Capacity76 gal
    Cargo Weight4,995
    Dry Weight11,405
    Electrical Service50
    Fresh Water Capacity81 gal
    Furnace BTU35,000
    Garage Size120
    Grey Water Capacity76 gal
    Height13.4 ft
    Hitch Weight2,425
    Length38.9 ft
    Number of Awnings3
    Refrigerator Size12
    Shower TypeRadius
    Sleeps6
    Slides3
    TV InfoLR 50"" LED HDTV
    Tire SizeST235/80R16F
    Washer/Dryer AvailableTrue