01 What makes it unique
Grand Design publishes an unloaded vehicle weight (UVW) of 2,900 lb and a GVWR of 4,420 lb for the 2027 Transcend Lite 121RBL, with a hitch weight of 350 lb. It does not publish a cargo carrying capacity on the floorplan page, so none is shown here, and none is worked out by subtracting one published figure from the other. The trailer’s own federal weight label, inside the door, carries its cargo capacity as built.
It is 15' 10" long, 10' 3" high and 8' wide, with 37 gal fresh, 39 gal grey and 37 gal black tanks as Grand Design lists them. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank adds roughly 307 lb before anything else is loaded.
Every number on this page was read on 5 Nov 2026 from Grand Design’s own floorplan page for the Transcend Lite 121RBL, whose structured data names the model year 2027.
02 Full specifications
Dimensions
- Exterior length
- 15' 10"
- Exterior height
- 10' 3"
- Exterior width
- 8'
Weights
- Dry / unit base weight (UVW)
- 2,900 lb
- GVWR (max loaded)
- 4,420 lb
- Net cargo / payload (CCC)
- Not published by Grand Design
- Hitch / tongue weight
- 350 lb
Capacities
- Fresh water
- 37 gal
- Grey water
- 39 gal
- Black water
- 37 gal
Running gear
- Hitch type
- Bumper pull
- Tire size
- ST215/75R14 LRD
- Axles
- 1
Sleeping & layout
- Sleeps
- 2
- Refrigerator
- 3.30 cu. ft.
How these published figures sit against the rest of the catalogue: travel trailer tongue weight by size; fresh, grey and black tank sizes; camper trailer size chart.
Drawn to scale
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (4,420 lb) and the upper loaded tongue estimate (663 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 10–15% of GVWR on the tongue, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433).
03 The Transcend Lite floorplan family
Grand Design lists one Transcend Lite floorplan for 2027, and this is it, profiled from Grand Design’s own floorplan page at 2,900 lb unloaded. Grand Design publishes UVW, GVWR and hitch weight for it, and no cargo carrying capacity.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| 121RBL | 15' 10" | 2 | Profiled |
Grand Design lists one Transcend Lite floorplan for 2027; it is profiled here.
04 Notes on this floorplan
What Grand Design does not publish for the Transcend Lite
No cargo carrying capacity appears on Grand Design’s floorplan pages for this series, so that row reads as not published. Nothing is filled from a sibling floorplan, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). Those figures come from the trailer itself and govern the towing decision.
05 How it compares
07 Where this floorplan sits
| Other lines, nearest by GVWR | GVWR (lb) | Dry or base (lb) | Sleeps | Length |
|---|---|---|---|---|
| 121RBL | 4,420 | 2,900 | 2 | 15 ft 10 in |
| Aurora Light 15RBX | 4,432 | 3,105 | — | 19 ft 6 in |
| Sportsmen Classic 170MB | 4,400 | 3,340 | 4 | 21 ft 8 in |
| Jay Flight 183RB | 4,350 | 3,310 | 4 | 21 ft 1 in |
| Jay Flight SLX 183RBW | 4,350 | 3,225 | 4 | 21 ft 1 in |
| Basecamp 20Xe | 4,500 | 3,750 | 4 | 20 ft 2 in |
| Coachmen Remote Remote 17R | 4,500 | 3,178 | — | 20 ft 8 in |
Against the 121RBL: the Aurora Light 15RBX is 12 lb heavier and 4 ft longer; the Sportsmen Classic 170MB is 20 lb lighter and 6 ft longer and sleeps 2 more; the Jay Flight 183RB is 70 lb lighter and 5 ft longer and sleeps 2 more.
08 Common questions about the 121RBL
How much does the 121RBL weigh?
2,900 lb dry; 4,420 lb GVWR, the most it may weigh loaded.
What is the tongue weight of the 121RBL?
350 lb as published, 12% of the dry weight (median across 1,413 travel trailers here: 12%).
What size tow vehicle does the 121RBL need?
A tow rating of at least 4,420 lb, plus payload for the loaded tongue weight, passengers and cargo.
How many people does the 121RBL sleep?
It is rated to sleep 2.
What are the tank capacities on the 121RBL?
Fresh 37, grey 39, black 37 gallons. Off hookups, fresh water runs out first.
How long is the 121RBL?
15' 10" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
13 of the 18 fields this catalogue tracks are published for the 121RBL. Not published: cargo capacity (CCC), interior height, slide count, awning, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: granddesignrv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 9 recall campaigns and 10 owner complaints (model years 2005 on) against the Transcend Xplor line (a recall and a complaint are not the same thing).
What to look at on a used one. Across the 10 complaints filed on this line the most-reported components are structure (30%), unknown or other (20%) and electrical system (10%).
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Transcend Xplor line page.