2024 OPUS OP 4 Base Specs
1
Can Your Vehicle Tow This?
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Get Your Real Numbers
Tow rating is one limit — payload is what overloads first
The full calculator factors in:
Tongue weight vs payload
Water tanks (50 gal = 417 lbs)
Propane (40 lbs full)
Passengers in truck
Gear, bikes, coolers, tools
Cargo weight distribution
Your truck's payload limit carries tongue weight, passengers, and everything in the bed — that's the number that overloads first. The calculator checks both tow and payload with real gear weights.
Towing & Dimensions
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| GVWR | 4200 lbs | - | ||
| Dry Weight | 3100 lbs | - | ||
| Hitch Weight | 400 lbs | - | - | - |
| Payload Capacity | 1100 lbs | - | - | |
| Length | 240 in | - | ||
| Width | 86 in | - |
Specs
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GVWR
4200 lbs
Dry Weight
3100 lbs
Hitch Weight
400 lbs
Payload Capacity
1100 lbs
Length
240 in
Width
86 in
Towing & Dimensions Best Sellers
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Electrical & Solar
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Shore Power | 30 Amps | - | ||
| Battery Type | 12V Lead-Acid | Top 5 | ||
| Solar Pre-Wired | Optional | - | ||
| Inverter | Optional | - |
Specs
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Shore Power
30 Amps
Battery Type
12V Lead-Acid
Solar Pre-Wired
Optional
Inverter
Optional
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Tank Capacities
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Fresh Water Holding Tanks | 1 | - | ||
| Fresh Water Tank Capacity | 40 gal | - | ||
| Number Of Propane Tanks | 1 | - | ||
| Propane Tank Capacity | 20 lbs | - |
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Number Of Fresh Water Holding Tanks
1
Fresh Water Tank Capacity
40 gal
Number Of Propane Tanks
1
Propane Tank Capacity
20 lbs
Tank Capacities Best Sellers
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Tires & Wheels
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Front Brake Type | Not Applicable | - | - | - |
| Rear Brake Type | Electric Drum | - | ||
| Rear Tire | 265/75R/15 Mud Tires Full Spec | - | - | - |
| Rear Tire Aspect Ratio | 75 | - | - | - |
| Rear Tire Speed Rating | R | - | - | - |
| Rear Tire Width | 265 | - | - | - |
| Rear Wheel Diameter | 15 | - | ||
| Spare Tire Location | Exterior Mounted | - | ||
| Wheels Composition | Steel | - | - | - |
Specs
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Front Brake Type
Not Applicable
Rear Brake Type
Electric Drum
Rear Tire
265/75R/15 Mud Tires Full Spec
Rear Tire Aspect Ratio
75
Rear Tire Speed Rating
R
Rear Tire Width
265
Rear Wheel Diameter
15
Spare Tire Location
Exterior Mounted
Wheels Composition
Steel
Tires & Wheels Best Sellers
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Living Room / Bedroom(s)
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Living Area Location | Center | - | - | - |
| Number Of Convertible / Sofa Beds | 1 | - | - | - |
| Number Of Double Beds | 2 | - | - | - |
| Number Of Sofas | 1 | - | - | |
| Reclining Sofa | No | - | ||
| Sofa Material | Vinyl | - | - | - |
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Living Area Location
Center
Number Of Convertible / Sofa Beds
1
Number Of Double Beds
2
Number Of Sofas
1
Reclining Sofa
No
Sofa Material
Vinyl
Living Room / Bedroom(s) Best Sellers
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Kitchen / Dining
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Kitchen / Living Area Flooring Type | Vinyl | - | - | - |
| Kitchen Table Configuration | Pedestal Table | - | - | - |
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Kitchen / Living Area Flooring Type
Vinyl
Kitchen Table Configuration
Pedestal Table
Bathroom
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Toilet Type | Cassette (With Curtain / Walls) | Top 5 |
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Toilet Type
Cassette (With Curtain / Walls)
Bathroom Best Sellers
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Exterior
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Leveling Jack Type | Front Manual / Rear Manual | - | - | - |
| Expandable Bunk Material | Soft Shell | - | - | - |
| Number Of Axles | 1 | - | - | - |
| Sidewall Construction | Tent Fabric | - | - | - |
| Number Of Emergency Exits | 1 | - | - | - |
| Number of Doors | 1 | - | ||
| Body Material | Aluminum | - | - | - |
Specs
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Leveling Jack Type
Front Manual / Rear Manual
Expandable Bunk Material
Soft Shell
Number Of Axles
1
Sidewall Construction
Tent Fabric
Number Of Emergency Exits
1
Number of Doors
1
Body Material
Aluminum
Exterior Best Sellers
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Options
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Battery Power Converter | Yes | - | - | - |
| Bunkhouse | No | - | - | - |
| Cable Prewiring | No | - | - | - |
| Interior Wood Finish | No | - | - | - |
| Overhead Fan | No | - | - | |
| Phone Prewiring | No | - | - | - |
| Satellite | No | - | - | - |
| Satellite Prewiring | No | - | - | - |
| Sliding Glass Door | No | - | - | - |
| Surround Sound | No | - | - | - |
| TV Antenna Prewiring | No | - | - | - |
| Wallpaper | No | - | - | - |
| Washer / Dryer Prewiring | No | - | - | - |
Specs
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Battery Power Converter
Yes
Bunkhouse
No
Cable Prewiring
No
Interior Wood Finish
No
Overhead Fan
No
Phone Prewiring
No
Satellite
No
Satellite Prewiring
No
Sliding Glass Door
No
Surround Sound
No
TV Antenna Prewiring
No
Wallpaper
No
Washer / Dryer Prewiring
No
Entertainment
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Speaker Location | Interior | - | - |
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Speaker Location
Interior
Entertainment Best Sellers
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Instrumentation
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Radios | 1 | - | - | - |
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Number Of Radios
1
Quick Overview
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Parent Company | Purple Line LLC | - | - | - |
| Year | 2024 | - | - | - |
| Make | OPUS | - | - | - |
| Display Name | OP 4 Base | - | - | - |
| Class | Expandable Trailer | - | - | - |
| Max Sleeping Count | 6 | - | - | - |
Specs
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Parent Company
Purple Line LLC
Year
2024
Make
OPUS
Display Name
OP 4 Base
Class
Expandable Trailer
Max Sleeping Count
6
Essential Upgrades for the 2024 OPUS OP 4 Base
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 expandable trailer.
Tow-Ready Score
5.5/10
Base Score
5.0
Spec-based adjustments
Based on Expandable Trailer class averages
+0.5
Final Tow-Ready Score
5.5
Living Space & Layout
5.0/10
Base Score
5.0
Spec-based adjustments
Based on Expandable Trailer class averages
+0.0
Final Living Space & Layout
5.0
Comfort & Features
5.0/10
Base Score
5.0
Spec-based adjustments
Based on Expandable Trailer class averages
+0.0
Final Comfort & Features
5.0
Storage Space
5.5/10
Base Score
5.0
Spec-based adjustments
Based on Expandable Trailer class averages
+0.5
Final Storage Space
5.5
Off-Grid & Campsites
6.0/10
Base Score
5.0
Spec-based adjustments
Based on Expandable Trailer class averages
+1.0
Final Off-Grid & Campsites
6.0
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 2024 OPUS OP 4 Base, ensure your vehicle's rated tow capacity exceeds its GVWR of 4200 lbs. With a dry weight of 3100 lbs and hitch weight of 400 lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.
This Expandable Trailer has a dry weight of 3100 lbs and a GVWR of 4200 lbs, giving a payload capacity of 1100 lbs for gear, water, and supplies.
The approximate dimensions are length 240 in., width 86 in., and height in. Always confirm clearances for garages, storage, and campsites.
The OP 4 Base includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.
Many OP 4 Base 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 4200 lbs and dry weight of 3100 lbs, the OP 4 Base 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 6 people comfortably - perfect for couples or small families seeking a lightweight, easy-tow Expandable Trailer.
The OP 4 Base features body construction with sidewalls and 1 axle(s). Its GVWR of 4200 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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