2018 Keystone RV Retreat 39fkss Specs

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This RV's GVWR
13,350 lbs
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Safe Towing Capacity
80%
Under capacity Safe zone Max rating

Mint Score

Overall Score
3.3
out of 5
Tow-Ready Score
3.5/ 5
Living Space & Layout
3.4/ 5
Comfort & Features
2.9/ 5
Storage Space
3.3/ 5
Off-Grid & Campsites
3.7/ 5

About the 2018 Keystone RV Retreat 39fkss

With three expansive slide-outs, the 2018 Retreat 39fkss maximizes your living space, making it an ideal choice for those seeking a true home base. At 40.2 feet long and with a dry weight of 10,828 lbs, it offers plenty of room for relaxation, accommodating up to four people comfortably. The well-appointed kitchen and cozy living area, complete with a fireplace, create a perfect atmosphere for extended stays. This RV is perfect for couples or small families looking to enjoy a stationary lifestyle with all the comforts of home.

What We Love

High Payload Capacity (2000+ lbs) Exterior Speakers Vinyl Flooring Throughout Rear Bedroom Layout Water Heater Bypass

Consider This

Heavy Rig - Requires 3/4-Ton+ Long Rig - Limited Campsite Options High Hitch Weight (1,200+ lbs)

Specifications by Category

View specs, shop products, or tap "More" for details.

Towing & Dimensions

Specs Value Buy Shop All Top 5
GVWR 13350 lbs Class 4 Receiver - -
Dry Weight 10828 lbs CURT WD Hitch & Sway Controller - -
Hitch Weight 1380 lbs - - -
Payload Capacity 2522 lbs Coil SumoSprings - -
Length 482 in Furrion Backup Camera Shop Cameras -
Width 102 in Clip On Mirrors Shop Mirrors -
Exterior Height 151 in Telescoping Ladder Shop Ladders -
Interior Height 96 in - - -
Specs
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GVWR
13350 lbs
Details
Safety Essential
Class 4 Receiver
4.5
Dry Weight
10828 lbs
Details
Recommended
CURT WD Hitch & Sway Controller
4.5
Hitch Weight
1380 lbs
Payload Capacity
2522 lbs
Details
Recommended
Coil SumoSprings
4.5
Length
482 in
Details
Recommended
Furrion Backup Camera
4.5
Width
102 in
Details
Recommended
Clip On Mirrors
Exterior Height
151 in
Details
Recommended
Telescoping Ladder
4.5
Interior Height
96 in

Electrical & Solar

Specs Value Buy Shop All Top 5
Battery Converter Amps 75 - - -
Shore Power 30 Amps - - -
Battery Type 12V Lead-Acid Renogy 100Ah LiFePO4 RV Batteries Top 5
Solar Pre-Wired Optional - - -
Inverter Optional - - -
Specs
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Battery Converter Amps
75
Shore Power
30 Amps
Battery Type
12V Lead-Acid
Details
Solar Pre-Wired
Optional
Inverter
Optional

Tank Capacities

Specs Value Buy Shop All Top 5
Number Of Fresh Water Holding Tanks 1 - - -
Number Of Gray Water Holding Tanks 1 - - -
Number Of Black Water Holding Tanks 1 - - -
Fresh Water Tank Capacity 53 gal 50-57gal Fresh Water Tank Fresh Water Tanks -
Gray Water Tank Capacity 78 gal - - -
Black Water Tank Capacity 39 gal - Back Water Tanks -
Number Of Propane Tanks 2 - - -
Propane Tank Capacity 60 lbs 30Lb Propane Tank Propane Tank Capacity -
Specs
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Number Of Fresh Water Holding Tanks
1
Number Of Gray Water Holding Tanks
1
Number Of Black Water Holding Tanks
1
Fresh Water Tank Capacity
53 gal
Details
Recommended
50-57gal Fresh Water Tank
Gray Water Tank Capacity
78 gal
Black Water Tank Capacity
39 gal
Details
Number Of Propane Tanks
2
Propane Tank Capacity
60 lbs
Details
Recommended
30Lb Propane Tank

Tires & Wheels

Specs Value Buy Shop All Top 5
Rear Brake Type Electric Drum - - -
Rear Tire Speed Rating E - - -
Wheels Composition Steel - - -
Front Brake Type Not Applicable - - -
Rear Wheel Diameter 16 - - -
Rear Tire Aspect Ratio 80 - - -
Rear Tire ST235/80R 16E Full Spec - - -
Rear Tire Width 235 - - -
Specs
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Rear Brake Type
Electric Drum
Rear Tire Speed Rating
E
Wheels Composition
Steel
Front Brake Type
Not Applicable
Rear Wheel Diameter
16
Rear Tire Aspect Ratio
80
Rear Tire
ST235/80R 16E Full Spec
Rear Tire Width
235

Heating & Cooling

Specs Value Buy Shop All Top 5
Air Conditioning Type Automatic Dometic 13.5K Air Conditioner Shop All RV AC -
Water Heater Tank Capacity 16 g 16Gal Water heater RV Water Heaters -
Heater Type Automatic - - -
Water Heater Pump Power Mode Electrical / Propane - - -
Specs
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Air Conditioning Type
Automatic
Details
Recommended
Dometic 13.5K Air Conditioner
4.3
Water Heater Tank Capacity
16 g
Details
Recommended
16Gal Water heater
4.0
Heater Type
Automatic
Water Heater Pump Power Mode
Electrical / Propane

Living Room / Bedroom(s)

Specs Value Buy Shop All Top 5
Number Of Bathrooms 1 - - -
Living Area Location Center - - -
Master Bedroom Door Style Conventional Door - - -
Full Size Master Bedroom Closet Yes - - -
Number Of King Size Beds 1 - - -
Number Of Sofas 1 Tri-Fold Sofa - -
Master Bedroom Shades / Curtains Yes - - -
Master Bedroom Location Rear - - -
Reclining Sofa No RV Loveseat Recliner Sofa Shop Sofa -
Number Of Convertible / Sofa Beds 1 - - -
Number Of Recliner / Rockers 1 - - -
Master Bedroom Mirror Doors Yes - - -
Master Bedroom Flooring Type Carpet - - -
Sofa Material Cloth - - -
Specs
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Number Of Bathrooms
1
Living Area Location
Center
Master Bedroom Door Style
Conventional Door
Full Size Master Bedroom Closet
Yes
Number Of King Size Beds
1
Number Of Sofas
1
Details
Recommended
Tri-Fold Sofa
4.6
Master Bedroom Shades / Curtains
Yes
Master Bedroom Location
Rear
Reclining Sofa
No
Details
Recommended
RV Loveseat Recliner Sofa
4.3
Number Of Convertible / Sofa Beds
1
Number Of Recliner / Rockers
1
Master Bedroom Mirror Doors
Yes
Master Bedroom Flooring Type
Carpet
Sofa Material
Cloth

Living Room / Bedroom(s) Best Sellers

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Kitchen / Dining

Specs Value Buy Shop All Top 5
Number Of Oven Burners 3 - - -
Kitchen / Living Area Flooring Type Carpet / Vinyl - - -
Refrigerator Size Full-Size - - -
Kitchen Table Configuration Chairs - - -
Refrigerator Power Mode Electric - - -
Kitchen Location Front - - -
Specs
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Number Of Oven Burners
3
Kitchen / Living Area Flooring Type
Carpet / Vinyl
Refrigerator Size
Full-Size
Kitchen Table Configuration
Chairs
Refrigerator Power Mode
Electric
Kitchen Location
Front

Bathroom

Specs Value Buy Shop All Top 5
Bathroom Flooring Type Vinyl - - -
Toilet Type Porcelain RV Toilet with Sprayer Attachment Toilets Top 5
Bathroom Location Center - - -
Specs
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Bathroom Flooring Type
Vinyl
Toilet Type
Porcelain
Details
Buying Guide Top 5 Toilet Type Products
Recommended
RV Toilet with Sprayer Attachment
Bathroom Location
Center

Exterior

Specs Value Buy Shop All Top 5
Number Of Axles 2 - - -
Sidewall Construction Aluminum - - -
Number Of Emergency Exits 1 - - -
Number of Doors 2 - - -
Door Type Plastic / Glass - - -
Body Material Wood - - -
Specs
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Number Of Axles
2
Sidewall Construction
Aluminum
Number Of Emergency Exits
1
Number of Doors
2
Door Type
Plastic / Glass
Body Material
Wood

Exterior Best Sellers

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Options

Specs Value Buy Shop All Top 5
Bunkhouse No - - -
Metallic No - - -
Sliding Glass Door Yes - - -
Water Heater Tank Bypass Yes - - -
Interior Wood Finish Yes - - -
Refrigerator Standard - - -
Phone Prewiring Yes - - -
TV Antenna Prewiring Yes - - -
Satellite Prewiring Yes - - -
Battery Power Converter Yes - - -
Washer / Dryer Prewiring Yes - - -
Heated No - - -
Cable Prewiring Yes - - -
Overhead Fan Yes Overhead Fan - -
Surround Sound Yes - - -
Satellite No - - -
Air Conditioning Prewiring Yes - - -
Wallpaper Yes - - -
Heat Prewiring Yes - - -
Power Retractable Slideout Yes - - -
Specs
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Bunkhouse
No
Metallic
No
Sliding Glass Door
Yes
Water Heater Tank Bypass
Yes
Interior Wood Finish
Yes
Refrigerator
Standard
Phone Prewiring
Yes
TV Antenna Prewiring
Yes
Satellite Prewiring
Yes
Battery Power Converter
Yes
Washer / Dryer Prewiring
Yes
Heated
No
Cable Prewiring
Yes
Overhead Fan
Yes
Details
Recommended
Overhead Fan
4.2
Surround Sound
Yes
Satellite
No
Air Conditioning Prewiring
Yes
Wallpaper
Yes
Heat Prewiring
Yes
Power Retractable Slideout
Yes

Entertainment

Specs Value Buy Shop All Top 5
Number Of Televisions 1 Insignia LED HD Alexa TV Shop RV TV's -
Number Of Discs 1 - - -
Speaker Location Interior / Exterior RecPro Exterior Speakers - -
Specs
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Number Of Televisions
1
Details
Recommended
Insignia LED HD Alexa TV
4.3
Number Of Discs
1
Speaker Location
Interior / Exterior
Details
Recommended
RecPro Exterior Speakers
4.4

Entertainment Best Sellers

Top-rated products RV owners use to upgrade or maintain their RV.

Instrumentation

Specs Value Buy Shop All Top 5
Number Of Radios 1 - - -
Specs
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Number Of Radios
1

Interior

Specs Value Buy Shop All Top 5
Material Cloth - - -
Specs
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Material
Cloth

Quick Overview

Specs Value Buy Shop All Top 5
Parent Company Keystone RV Inc. - - -
Year 2018 - - -
Make Keystone - - -
Display Name Retreat 39FKSS - - -
Class Destination - - -
Max Sleeping Count 4 - - -
Number of Slideouts 3 - - -
Introduction Year 2010 - - -
Specs
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More
Parent Company
Keystone RV Inc.
Year
2018
Make
Keystone
Display Name
Retreat 39FKSS
Class
Destination
Max Sleeping Count
4
Number of Slideouts
3
Introduction Year
2010

How We Scored This RV

Our MintRV Rating analyzes over 50 specifications across 5 key dimensions. Each dimension starts at 5.0 points and adjusts based on how this RV's specs compare to others in its class. Below is exactly how we calculated each score for this destination.

Tow-Ready Score
7.0/10
Base Score 5.0
Spec-based adjustments Based on Destination class averages +2.0
Final Tow-Ready Score 7.0
Living Space & Layout
6.8/10
Base Score 5.0
Spec-based adjustments Based on Destination class averages +1.8
Final Living Space & Layout 6.8
Comfort & Features
5.8/10
Base Score 5.0
Spec-based adjustments Based on Destination class averages +0.8
Final Comfort & Features 5.8
Storage Space
6.5/10
Base Score 5.0
Spec-based adjustments Based on Destination class averages +1.5
Final Storage Space 6.5
Off-Grid & Campsites
7.3/10
Base Score 5.0
Spec-based adjustments Based on Destination class averages +2.3
Final Off-Grid & Campsites 7.3
About Our Rating Methodology

MintRV Ratings are calculated using verified manufacturer specifications. We compare each RV against others in its class type and weight category. Scores are updated when new specs become available. Learn more about our methodology →

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Frequently Asked Questions

To safely tow the 2018 Keystone RV Retreat 39fkss, ensure your vehicle's rated tow capacity exceeds its GVWR of 13350 lbs. With a dry weight of 10828 lbs and hitch weight of 1380 lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.

This Destination has a dry weight of 10828 lbs and a GVWR of 13350 lbs, giving a payload capacity of 2522 lbs for gear, water, and supplies.

The approximate dimensions are length 482 in., width 102 in., and height 151 in. Always confirm clearances for garages, storage, and campsites.

The Retreat 39fkss includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.

Many Retreat 39fkss owners add a weight-distribution hitch, brake controller, leveling system, and portable generator to improve towing comfort. Solar kits, backup cameras, and upgraded tires are also popular upgrades.

With a GVWR of 13350 lbs and dry weight of 10828 lbs, the Retreat 39fkss is light enough for smaller tow vehicles yet rugged enough for light off-road travel. Add solar, extra propane, and a generator for extended off-grid stays.

This floorplan sleeps up to 4 people comfortably - perfect for couples or small families seeking a lightweight, easy-tow Destination.

The Retreat 39fkss features body construction with sidewalls and 2 axle(s). Its GVWR of 13350 lbs ensures strength without excessive towing weight.
?? Tip: Always check your vehicle's specific towing capacity in the owner's manual. Consider payload and tongue weight too!

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