About: Keystone RVs

Browse Keystone RVs. View our entire inventory of New or Used Keystone RVs. RVTrader.com always has the largest selection of New or Used Keystone RVs for sale anywhere.

COVID 19 has caused some inventory shortages. Be sure to contact our sellers to confirm availability!

Sell

Used Keystone MONTANA 300RK RVs for Sale

Done
Premium
Nearest
Recent
High $
Low $
Newest
Oldest
Loading your results...
Featured See All

Bummer, zero RVs found.

Save this search and opt-in to get an email when new matching RVs are listed.

You might like these other Keystone RVs.

Premium
2021 Keystone MONTANA HIGH COUNTRY 377FL in Boerne, TX 2021 Keystone MONTANA HIGH COUNTRY 377FL in Boerne, TX
 8

$59,500

 8
Selling our nearly new fifth wheel due to a lifestyle change. This doesn't mean you can lowball or try to take advantage as we dont HAVE to sell. If y...
Private Seller
Boerne, TX
Private Seller
Boerne, TX
Premium
2021 Keystone MONTANA 3760FL in Aurora, CO 2021 Keystone MONTANA 3760FL in Aurora, CO
 22

$98,000

 22
1,400 miles
This coach is in pristine condition, and has a bunch of add-ons and upgrades for the person that wants to travel or live in it full-time. The Front Li...
Private Seller
Aurora, CO
Private Seller
Aurora, CO
Premium
2021 Keystone Rv MONTANA HIGH COUNTRY 385BR in Surprise, AZ 2021 Keystone Rv MONTANA HIGH COUNTRY 385BR in Surprise, AZ
 42
 1
Stock Number: C7263

$59,900

 42
 1
Make an Offer
2021 Keystone RV MONTANA HIGH COUNTRY 385BR, CONSTRUCTION FEATURES Unified wiring standard: each wire color-coded and numberedRoof raftersWelded alumi...
Orangewood RV Center
Surprise, AZ
Premium
2021 Keystone Montana 3120RL in Paso Robles, CA 2021 Keystone Montana 3120RL in Paso Robles, CA
 2
 1
Stock Number: XC2039

$64,559

 2
 1
Make an Offer
2021 Keystone Montana, 3120RL, Get ready for an adventure in a 2021 Keystone Montana 3120RL. Sleep peacefully in this Montana 3120RL which comfortably...
Sky River RV - Paso Robles
Paso Robles, CA
Premium
2020 Keystone MONTANA 3813MS in Clarinda, IA 2020 Keystone MONTANA 3813MS in Clarinda, IA
 33

$65,000

 33
2020 Keystone Montana 3813ms, in new condition. 40'9", 3 slides, sleeps 4, self leveling jacks, power awnings, new camper king mattress, tailgater ant...
Private Seller
Clarinda, IA
Private Seller
Clarinda, IA
Premium
2020 Keystone MONTANA 3813MS in Summerfield, FL 2020 Keystone MONTANA 3813MS in Summerfield, FL
 40

$89,900

 40
Under Warranty
Never used, never slept in, never cooked in, brand new fifth wheel that has almost every option that could be custom ordered including ONAN GOLD 5.5 k...
Private Seller
Summerfield, FL
Private Seller
Summerfield, FL
Premium
2020 Keystone MONTANA 3121RL in Little Egg Harbor, NJ 2020 Keystone MONTANA 3121RL in Little Egg Harbor, NJ
 9

$62,000

 9
Brand new, never used, highly sought after Montana. This model is just the right size. Accepted at State Park sites. Fully loaded. Has slider toppers....
Private Seller
Little Egg Harbor, NJ
Private Seller
Little Egg Harbor, NJ
Premium
2020 Keystone MONTANA 3761FL in Sugar Tree, TN 2020 Keystone MONTANA 3761FL in Sugar Tree, TN
 27

$64,500

 27
2020 Montana Front Living1.5 bath 5 slides 2 A/C 4 seasons package tank heaterheat pump fireplacepop up TV2 awning auto levelboth couches up front mak...
Private Seller
Sugar Tree, TN
Private Seller
Sugar Tree, TN
Premium
2020 Keystone MONTANA 3854BR in La Mesa, CA 2020 Keystone MONTANA 3854BR in La Mesa, CA
 18

$78,000

 18
13 miles
Check out this great Montana 3854BR 5th Wheel. This 40' 10" 5th Wheel has 4 slides and can sleep 8 people. It has a 66 gallon fresh water tank, 88 gal...
Private Seller
La Mesa, CA
Private Seller
La Mesa, CA
Premium
2020 Keystone MONTANA HIGH COUNTRY 376FL in Truth Or Consequences, NM 2020 Keystone MONTANA HIGH COUNTRY 376FL in Truth Or Consequences, NM
 10

$69,900

 10
Make Offer
3,000 miles
We bought this fifth wheel when my husband found out he would be traveling for work. His work conditions quickly changed and was relocated. We now no ...
Private Seller
Truth Or Consequences, NM
Private Seller
Truth Or Consequences, NM
Premium
2020 Keystone MONTANA 3741FK in Eureka, MT 2020 Keystone MONTANA 3741FK in Eureka, MT
 21

$58,000

 21
OBO
2,500 miles
What else to say, it's a great Montana, full time living approved by manufacturer, most all options, 2 a/c's heat pump, heated tanks, 4 seasons, well ...
Private Seller
Eureka, MT
Private Seller
Eureka, MT
Premium
2020 Keystone Rv MONTANA 3761 in Hammond, LA 2020 Keystone Rv MONTANA 3761 in Hammond, LA
 17
 1
 1
Stock Number: 37004A

$67,995

 17
 1
 1
Make an Offer
2020 Keystone RV MONTANA 3761, OVERVIEW There is a time in your life when you know your next RV will be a Keystone Montana. You're an experienced camp...
Great American RV SuperStores
Hammond, LA
Premium
2020 Keystone MONTANA HIGH COUNTRY 334BH in Big Sky, MT 2020 Keystone MONTANA HIGH COUNTRY 334BH in Big Sky, MT
 22
 1

$52,000

 22
 1
Under Warranty
1,000 miles
Great fifth wheel bunkhouse that was only used for one summer season. Awesome master with king bed and window on the front cap that really opens the r...
Private Seller
Big Sky, MT
Private Seller
Big Sky, MT
Premium
2020 Keystone MONTANA 3855BR in Knoxville, TN 2020 Keystone MONTANA 3855BR in Knoxville, TN
 24
 1

$70,999

 24
 1
Negotiable
3,000 miles
2020 Montana 3855BR in great condition and ready to start traveling and making memories. My wife and I have lived in this unit for the past year. We h...
Private Seller
Knoxville, TN
Private Seller
Knoxville, TN
Premium
2020 Keystone Rv Montana 3120RL in Columbia, TN 2020 Keystone Rv Montana 3120RL in Columbia, TN
 64
 1
Stock Number: U0393A

$64,995

 64
 1
Make an Offer
2020 Keystone RV Montana 3120RL, SAVE THOUSANDS buying this super nice rear living Keystone Montana! Like new! Lifetime warranty included at no cost t...
A & L RV Sales - Columbia
Columbia, TN
Premium
2020 Keystone Rv Montana High Country 294RL in Lexington, SC 2020 Keystone Rv Montana High Country 294RL in Lexington, SC
 21
 1
Stock Number: SP0660

$49,976

 21
 1
Make an Offer
2020 Keystone RV Montana High Country 294RL, 2020 Keystone RV Montana High Country 294RL Upgrade your adventure. No reason to short change yourself on...
Johns RV Sales & Service
Lexington, SC
Premium
2019 Keystone MONTANA 3731FL in Tampa, FL 2019 Keystone MONTANA 3731FL in Tampa, FL
 19
 Floorplan

$69,650

 19
This RV is perfect for full timer or SnowBirds. It isequipped with solar panels, has resendential refrigerator,Furrion oven,both LR sofas fold out to ...
Private Seller
Tampa, FL
Private Seller
Tampa, FL
Premium
2019 Keystone MONTANA 3820FK in Panama City Beach, FL 2019 Keystone MONTANA 3820FK in Panama City Beach, FL
 17

$57,000

 17
Negotiable
Fully loaded, Legacy Edition. Onan Propane Generator on board. Great for a couple, who would like to full time on the road. The living room sofa's fol...
Private Seller
Panama City Beach, FL
Private Seller
Panama City Beach, FL
Premium
2019 Keystone MONTANA HIGH COUNTRY 381TH in Trinity, NC 2019 Keystone MONTANA HIGH COUNTRY 381TH in Trinity, NC
 29

$65,900

 29
Firm
1,500 miles
2019 381TH like new condition. Used for less than a total of 6 weeks at Myrtle Beach and Gatlinburg TN. Completley serviced and winterized in October ...
Private Seller
Trinity, NC
Private Seller
Trinity, NC
Premium
2019 Keystone MONTANA 3855BR in Shawnee, OK 2019 Keystone MONTANA 3855BR in Shawnee, OK
 18

$65,000

 18
Beautiful 40th anniversary edition 5th wheel RV. Sleeps 8, includes 2 Flat screen TV's, outdoor/indoor sound system, washer/dryer combo, king size bed...
Private Seller
Shawnee, OK
Private Seller
Shawnee, OK
Premium
2019 Keystone MONTANA HIGH COUNTRY 330RL in Azle, TX 2019 Keystone MONTANA HIGH COUNTRY 330RL in Azle, TX
 19

$46,000

 19
Under Warranty
My wife and I are done travel nursing and we don’t have a need for this rig anymore. It is in excellent condition and carries the remainder of a 9 y...
Private Seller
Azle, TX
Private Seller
Azle, TX
Premium
2019 Keystone MONTANA 3854BR in Belle Fourche, SD 2019 Keystone MONTANA 3854BR in Belle Fourche, SD
 29

$79,000

 29
Under Warranty
400 miles
2019 Keystone Montana 20th Anniversary Edition - Like NEW Motivated SellerAll the Bells and Whistles with this "like NEW" Keystone FifthWheel RV. Has ...
Private Seller
Belle Fourche, SD
Private Seller
Belle Fourche, SD
Premium
2019 Keystone Montana in Surprise, AZ 2019 Keystone Montana in Surprise, AZ
 14

$63,000

 14
190 solar panels  2000 watt inverter  Electric fireplace  Washer/Dryer ready  Full size fridge 16cu/ft King size bed Stored in RV garage ...
Private Seller
Surprise, AZ
Private Seller
Surprise, AZ
Premium
2019 Keystone Rv MONTANA 3700LK in Everett, WA 2019 Keystone Rv MONTANA 3700LK in Everett, WA
 76
 1
Stock Number: 5837

$64,950

 76
 1
1-Owner * Like New!

$64,950

1-Owner * Like New!
2019 MONTANA 3700LK 5th/Wheel, by Keystone RV, 4 Slide-Outs G.V.W.R.  16,400 Lb. U.V.W.R.  12,480 Lb. Slide-Outs Living: Leatherette sofa, tri-f...
Kirkland RV Sales
Everett, WA
Premium
2019 Keystone Montana High Country in Moundville, MO 2019 Keystone Montana High Country in Moundville, MO
 18

$47,000

 18
Negotiable
Has been full time lived in since bought new in November of 2018. Has 6 month old Splendide stackable washer and vented dryer. No leaks and still look...
Private Seller
Moundville, MO
Private Seller
Moundville, MO
Disclaimers

RV Trader Disclaimer: The information provided for each listing is supplied by the seller and/or other third parties. RVTrader.com is not responsible for the accuracy of the information. Please refer to the RV Trader Terms of Use for further information.

Financing Disclaimer: * Rates and terms may vary and are subject to approval of applicant and guarantor credit, equipment and supplier. Any payment or rate does not include additional fees or advance payments (if applicable) and are for informational purposes only. Applicant credit profile including FICO is used for decisioning. Assets aged 10-15 years may require increased finance charges. Equal opportunity lender. Commercial financing provided or arranged by Currency Capital, LLC pursuant to California Finance Lender License #60DBO56173. Consumer financing arranged by Express Tech-Financing, LLC pursuant to California Finance Lender License #60DBA54873 and state licenses listed at this link.

Download Our App
image loading image loading