2026 Keystone Montana 3123RL
Fifth Wheel · Luxury Fifth Wheel · 35.08 ft · sleeps 4

The 2026 Keystone Montana 3123RL is a fifth wheel (luxury fifth wheel). At sleeps 4, 35.08 ft long, 12,881 lbs dry, it's positioned for buyers comfortable towing with the right tow vehicle.
Floor plan

Photos of the 2026 Keystone Montana 3123RL
Walkthrough video
Video courtesy of Collier RV Rockford on YouTube.
Full specifications
Dimensions
| Length | 35.08 ft |
|---|---|
| Slide-Outs | 3 |
Weights
| Dry Weight | 12,881 lbs |
|---|
Living
| Sleeps | 4 |
|---|---|
| Bunkhouse | No |
Power & Electrical
| Shore Power | 50 A |
|---|
Amenities
| Outdoor Kitchen | No |
|---|---|
| Theater Seating | Yes |
| Residential Fridge | Yes |
| Fireplace | No |
| Four-Season | Yes |
| Off-Road Capable | No |
Similar Fifth Wheels to consider
Other fifth wheels in the catalog with comparable size and price.
Frequently asked questions
How many people does the 2026 Keystone Montana 3123RL sleep?
The 2026 Keystone Montana 3123RL sleeps 4.
How long is the 2026 Keystone Montana 3123RL?
The 2026 Keystone Montana 3123RL is 35.08 feet long.
What's the dry weight of the 2026 Keystone Montana 3123RL?
The 2026 Keystone Montana 3123RL has a dry weight of 12,881 lbs.
Where can I buy the 2026 Keystone Montana 3123RL?
Pirka Wakka is a brand-agnostic catalog and doesn't sell RVs. The "Buy on Keystone" link on this page sends you to the manufacturer's product page — they'll route you to an authorized dealer.
Not sure if the 2026 Keystone Montana 3123RL is right for you?
Tell Matchmaker your trip, your budget, and your tow vehicle. She'll narrow the catalog to the 2-4 RVs that actually fit — verified specs only, no upsells.
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