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Used 2021 Keystone Montana 3120RL

Anna, ILFun Town RVDirections

Sleeps4
Length35' 0"
Dry weight12,056 lb
Slide-outs3

About this RV

Keystone Montana fifth wheel 3120RL highlights: • Hide-A-Bed Sofa • Dinette with Four Chairs • Kitchen Island • Coffee Station • RV Refrigerator • Fireplace With this Montana fifth wheel, you can have adventures any time! The private bedroom has a barn door that closes it off from the rest of the unit, and the bedroom is fully equipped for comfort with a queen bed slide, a dresser with 32" LED HDTV, a clothing hamper, a huge closet, and an area prepped for the optional washer/dryer. The main living area is also going to feel exceptionally comfortable with its hide-a-bed sofa, power theater seating, fireplace, and 50" LED HDTV. As you spend your afternoon working on dinner, you'll appreciate that the large island provides you with additional prep space, and the coffee station is going to be a fun feature to use both in the morning and in the afternoon for a pick-me-up. If you are an experienced RVer who is ready to gain more freedom on the road, then you need to check out the Keystone Montana fifth wheel! With exceptional craftsmanship, durable construction, dependable luxury, and cutting-edge technology, the Montana is truly a dream.

Specifications as listed by the dealer

Type
Fifth wheel
Condition
Used
Year
2021
Make
Keystone
Model
Montana 3120RL
Stock number
215816A
VIN
4YDF31221M4701664
Hitch weight
2,280 lb
Sleeps
4
Slides
3
Length
35 ft
Ext Height
13 ft 4 in
Dry Weight
12,056 lbs
Cargo Capacity
3,944 lbs
Fresh Water Capacity
66 gals
Grey Water Capacity
88 gals
Black Water Capacity
49 gals
Tire Size
ST235/80R16G
Furnace BTU
35,000 btu
Available Beds
Queen
Refrigerator Type
Four Door RV
Refrigerator Size
18 cu ft
Convection Cooking
Yes
Cooktop Burners
3
Shower Size
48" x 30"
Number of Awnings
2
Axle Weight
7,000 lbs
LP Tank Capacity
30 lbs
Water Heater Capacity
12 gal
Water Heater Type
DSI Gas/Electric
AC BTU
30,000 btu
TV Info
LR 50" LED HDTV, BR 32" LED HDTV
Awning Info
10' & 16' Electric with LED Lights
Axle Count
2
Washer/Dryer Available
Yes
Number of LP Tanks
2
Shower Type
Shower w/Seat
Electrical Service
50 amp

Features

  • Color-coded unified wiring standard
  • 4G LTE and Wi-Fi prep
  • Tuf-Lok™ thermoplastic duct joiners
  • KeyTV™ multisource signal controller
  • In-floor heating ducts
  • Tru-fit™ slide construction
  • 12" I-beam w/ z-frame technology
  • Road Armor™ shock absorbing hitch pin
  • Hitch Vision™ w/ LED lighting
  • 2" thick CNC routed, dual-layered lauan, high-gloss fiberglass sidewalls w/ double laminated & insulated rear wall
  • Frameless tinted safety glass windows
  • Dual pane frameless windows w/ safety tint (Optional)
  • MaxTurn™ front cap w/ KeyShield™ automotive-grade paint
  • Fully walkable roof w/ Alpha seamless TPO membrane system and 5" rafters
  • Rear ladder
  • Hydraulic slideouts on main level w/ individual selector valves & electric slideouts on upper deck
  • Insulated underbelly w/ forced hot air & electric tank heaters
  • 7000 lb Dexter Gladiator® thick wall axles w/ upgraded springs & Nev-R-Adjust® brakes
  • Road Armor™ suspension w/ 360° vibration control
  • Premium Sailun G-rated tires w/ 6-year manufacturer warranty & Tredit Care Plus roadside assistance
  • Spare tire
  • Ground Control® 6 point hydraulic auto-leveling w/ hitch memory
  • 6' 4" tall 30" wide entry door w/ screen defender & friction hinge
  • MORryde® Step Above® entry steps w/ strut assist
  • Large pass through storage w/ oversized slam latch door (Select Models)
  • MORryde® premium oversized rear steel slide out storage tray (Select Models)
  • Side & back-up camera prep
  • 2nd battery disconnect dedicated to residential refrigerator (inverter models)
  • Water connections, black tank flush, outside shower w/ quick connect hose, winterization kit, water heater bypass, power tank fill, waste & water handle valves, 110V outlet,…
  • Generator prep (Optional)
  • LP generator (Optional)
  • Seamless roto-cast holding tanks
  • Outdoor kitchen (Select Models)
  • Pull-out exterior kitchen (Select Models)
  • 50 Amp electrical service w/ detachable cord & 110v exterior outlet
  • Outside shower w/ quick disconnect hose
  • Dometic 12V electric patio awning(s) w/ LED lights and awning arm power strip
  • 2nd Dometic 12V electric patio awning(s) w/ LED lights and awning arm power strip
  • Slide-out awning package (Optional)
  • 3000 lb towing hitch (Select Models)

Questions about this 2021 Keystone Montana 3120RL

Is it still for sale?

Fun Town RV’s website listed it for sale on November 5, 2026. RV Shift checks dealers’ websites about once a day, so ask the dealer to be sure.

What does it take to tow it?

RV Finder’s estimate: it needs a vehicle rated to tow about 13,300 lb, with a fifth-wheel hitch. That is its 12,056 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 Fun Town RV. You can also call Fun Town RV at (833) 386-8696.

Listing and photos: Fun Town RV. Details come from the dealership and can change; confirm them before you buy.

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