01 What makes it unique
The 3970 is the Model G defined by its plumbing: it is the two-full-bath plan in the line. Where the 3950 puts a loft over the garage, the 3970 dedicates that space to a second full bathroom — a private bath off the front bedroom and a second full bath serving the living-and-garage end, the layout that buyers who have lived in a one-bath fifth wheel ask for. The 14-foot garage keeps the residential Model G feel up front, with the premium kitchen, a king bed slide-out and the Brinkley G Dinesk convertible dining table/L-desk standard on this plan.
It shares the heavier plans’ numbers. RVUSA lists a published 23,000-pound GVWR against an 18,700-pound dry weight, leaving a 4,300-pound payload against a 3,450-pound dry pin — a one-ton-and-up tow. The full Model G build is standard: the single continuous I-beam chassis on three 8,000-pound axles, the 30,000-pound Gen-Y pin box, SumoSprings, disc brakes, triple 13,500-BTU heat-pump air conditioners, 800-watt solar and the FlexPower 5500 generator, with four power awnings.
At an MSRP of $230,448 it sits near the top of the line, just above the single-bath 3950. For a couple or family who values two full bathrooms over a garage loft — a private owner’s bath and a second full bath for guests — the 3970 is the two-bath Model G.
02 Full specifications
Dimensions
- Exterior length
- 45' 5"
- Exterior width
- 8' 5"
- Exterior height
- 13' 5"
- Garage / flex length
- 14' garage
Weights
- Dry / unit base weight
- 18,700 lbs
- GVWR (max loaded)
- 23,000 lbs
- Net cargo / payload
- 4,300 lbs
- Dry pin weight
- 3,450 lbs
Capacities
- Fresh water
- 150 gal
- Grey water
- 156 gal
- Black water
- 85 gal
- Refrigerator
- 19 cu ft
Construction
- Frame
- Single continuous I-beam · Gen-Y certified chassis
- Walls
- Laminated Azdel · high-gloss gel-coat fiberglass · full-body paint
- Insulation
- Industry-best package · enclosed heated underbelly
- Garage
- Tough-ply floor & walls · Zero-Gravity ramp door · 3-season patio doors
Running gear
- Axles
- 3 (8,000 lb) · 8,000 lb leaf springs · disc brakes std
- Hitch
- Fifth-wheel (in-bed) · 30k Gen-Y Executive Torsion Flex pin box
- Suspension
- SumoSprings · banded TPMS w/ wireless display
- Tires
- 16-ply Load Range H Cooper Work Series · aluminum wheels
Galley & bath
- Cooktop
- Residential range · GE Energy Star appliances
- Refrigerator
- 19 cu ft · 12-volt GE
- A/C
- Triple GE low-profile 13.5k w/ heat pump (main + bedroom + garage)
- Bath
- Two full baths
Sleeping & layout
- Sleeps
- Up to 6
- Slides
- 3
- Awnings
- 4
- Primary bed
- King bed slide-out
03 The Model G floorplan family
The Brinkley Model G is the brand's luxury fifth-wheel toy-hauler line — a residential interior and an automotive exterior wrapped around a multi-purpose garage/flex space. The line runs to nine floorplans for 2026; the seven with published weights are profiled here in full, and the two front-office plans are catalogued on the line hub pending weight publication. The 3970 on this page is highlighted; each other profiled plan links to its own page.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| 3250 | 38 ft | 6 | Garage-with-loft entry, L/U sofa, shortest garage |
| 3500 | 40 ft | 6 | Mid-kitchen waterfall island, 11' garage + loft, king bed |
| 3520 | 40 ft | 6 | 3500 living room rotated 90° (dual recliners), flex garage |
| 4000 | 45 ft | 5 | 16' Garage-Mahal + loft + half bath, waterfall island |
| 4100 | 46 ft | 8 | 12'6" garage, walk-in closet, kitchen island |
| 3950 | 45 ft | 8 | 14' garage with loft, u-shaped sofa |
| 3970 | 45 ft | 6 | 14' garage, TWO full baths |
| 4150 | 46 ft | 8 | Front office (remote-work) — weights not yet published |
| 4170 | 46 ft | 8 | Front office variant — weights not yet published |
The Brinkley Model G is the luxury fifth-wheel toy-hauler line from Brinkley RV, an independent manufacturer founded by RV-industry veterans. The full line runs to nine floorplans for 2026; seven are profiled here and two front-office plans are catalogued above pending weight publication. Every plan rides a single continuous I-beam chassis on three 8,000-pound axles with 8,000-pound leaf springs, a 30,000-pound Gen-Y Executive Torsion Flex pin box, SumoSprings and disc brakes as standard, and pairs a residential interior with an automotive exterior and a multi-purpose garage/flex space with a Zero-Gravity ramp door. Each ships with a 19-cubic-foot 12-volt refrigerator, triple GE low-profile 13,500-BTU heat-pump air conditioners, an 800-watt solar package, a FlexPower 5500 dual-fuel inverter generator and a Rockford Fosgate audio system. Body specifications (lengths, heights, payload, tanks, sleeping, slides and awnings) are RVUSA-verified against the 2026 structured spec records, each page fp-slug and title checked; dry weight, GVWR, payload and pin weight are published per plan, and each plan's dry weight plus payload equals its GVWR exactly. A toy hauler's real loaded pin weight runs well above the base figure — always weigh the loaded coach and confirm against your truck's payload and rear-axle ratings.
04 What owners & reviewers report
Two full baths
The defining feature — a private owner’s bath plus a second full bath for guests or the garage, the only Model G with two full bathrooms.
Loft traded for the bath
The 3950’s garage loft becomes the second full bathroom here — a privacy-and-convenience choice over guest sleeping.
Full Model G build
The same continuous I-beam chassis, triple 8,000-lb axles, Gen-Y pin box and triple A/C as the rest of the line, at 45 feet.
Same weights as the 3950
Identical dry, GVWR, payload and pin to its single-bath sibling — the trade is layout, not mass.
05 How it compares
The same 45-foot shell with a garage loft instead of the second full bath — guest sleeping over a second bathroom.
The 16-foot “Garage-Mahal” with loft and half bath — more garage and more payload.
The 46-foot plan that sleeps eight with a walk-in closet and a bath-and-a-half — the most living and sleeping space.