Factory build sheet
2021 Ram 1500 BIG Horn, Lonestar
Build 1C6RREBG-M · 3.6L 6cyl · Pickup
VIN positions 1 through 8 read 1C6RREBG and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every 1500 whose VIN starts 1C6RREBG and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 2,980 of them.
- Decoded Jul 7, 2026
- 2,980 known VINs
- 45 listed for sale now
Factory specification
As filed by Ram with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 3.6 L
- Cylinders
- 6
- Configuration
- V-Shaped
- Engine model
- 36l v6 24v mpfi dohc
- Engine manufacturer
- FCA
- Horsepower
- 305 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- 4x2
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Manufacturer
- FCA US LLC
Weight rating
- GVWR class
- Class 2E
- GVWR
- 6,001–7,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
What this build asks today
Asking prices of live dealer listings decoded to this exact configuration — narrower than the trim-level figure, because every car counted here shares the same engine, transmission and drivetrain.
$23,981 median asking price · 61 listings · as of Aug 30, 2026
Low 2% of listings $16,495 Top 2% of listings $29,793
The same build, other model years
Ram used the VIN pattern 1C6RREBG for 8 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
- 2019 BIG Horn/Lonestar 3.6L 6cyl Pickup · 676 vehicles code K $18,900
- 2020 BIG Horn, Lonestar 3.6L 6cyl Pickup · 647 vehicles code L $21,966
-
2021 You are here code M $23,981
- 2022 BIG Horn, Lone Star 3.6L 6cyl Pickup · 5,509 vehicles code N $25,999
- 2023 BIG Horn 3.6L 6cyl Pickup · 1,326 vehicles code P $29,126
- 2024 BIG Horn/Lonestar 3.6L 6cyl Pickup · 594 vehicles code R $32,145
- 2025 BIG Horn/Lonestar 3.6L 6cyl Pickup · 992 vehicles code S $33,780
- 2026 BIG Horn/Lonestar 3.6L 6cyl Pickup · 256 vehicles code T $48,307
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1C6 | FCA US LLC · World manufacturer identifier |
| 4–8 | RREBG | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
NHTSA safety ratings
Crash-test results are published per model year and body style, so they cover the 2021 Ram 1500 as a whole rather than this build alone.
Overall
★★★★★ 5 / 5
Frontal crash
★★★★ ★ 4 / 5
Side crash
★★★★★ 5 / 5
Rollover
★★★★ ★ 4 / 5
15 recall campaigns are recorded for the 2021 1500. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
2,980 vehicles carry this build
Every VIN we have decoded to 1C6RREBG-M shares the specification above.
- 2,980 Known VINs
- 45 Listed for sale now
- 61 Priced listings
- $23,981 Median asking
Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
Neighboring configurations
Other factory configurations of the 1500, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Prices are asking prices from 61 live dealer listings decoded to this build , last updated August 30, 2026 . They are what sellers ask, not what buyers paid.
Vehicle counts come from the 2,980 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.