- Interior Utility Rails — if your Grenadier didn't come with factory rails, these are the foundation everything else mounts to. DVA bolt-on rails use factory mounting points, no drilling.
- Quick-release tie-down rings — compatible with both the interior L-Track rails and the exterior Utility Belt. Buy at least 4; standard profile fits all INEOS-compatible L-Track hardware.
- Cargo floor liner — install before the rails if possible; the liner sits beneath the rail mounting hardware and you'll need to cut access notches after the fact if you do it in reverse.
- Fridge power connection — the DTP system and the 400W cargo socket both serve this purpose; method depends on your fridge and where you want it positioned.
- Roof utility crossbars — the DVA DualTrack system extends the same L-Track platform topside, so the cargo ring hardware you already have works both inside and on the roof.
The INEOS Grenadier's interior was designed with utility built in. The problem is that the most useful features — the Interior Utility Rail System in particular — were optional add-ons at the configurator stage, and a lot of US buyers didn't tick the box. They either didn't know what the rails were for, or they specced their vehicle before the aftermarket had caught up well enough to show what was possible.
That gap closed. Here's what the interior platform actually consists of, what's worth adding, and how each piece connects to the larger DVA vehicle utility system — because interior rail hardware doesn't stop at the tailgate.
What INEOS Puts in the Box
Every Grenadier Station Wagon ships with four quick-release tie-down rings in the loadspace floor. They're functional, they're recessed, and they're the only cargo management hardware standard-equipped on the base vehicle. The floor itself provides 40 cubic feet of cargo space behind the second row; fold the 60/40-split rear seats forward and you get 71 cubic feet — a genuinely flat load floor, which matters for sleep setups and drawer systems alike.
The Interior Utility Rail System is a factory option — two trunk-mounted L-Track rails, driver and passenger sides, installed during production at three mounting points per side. INEOS uses a standard L-Track profile. The rails sit flush to the cargo floor sides when installed and accept all compatible L-Track hardware: quick-release rings, sliding tie-down points, cargo organizers, and rail-mounted accessories from the broader aftermarket.
There's also the OEM Loadspace Drawer at £1,961 (~$2,500 USD) — a large, lockable drawer system rated for 90kg of contents that creates a full flat floor when the rear bench seat is folded forward. It's a good system if you don't also want interior utility rails, because the two are mutually exclusive.
"Please note, the Interior Utility Rails must be removed from the vehicle in order to fit the Loadspace Drawer System in place, as described in the fitting instructions."
— INEOS Grenadier configurator note, as quoted on TheIneosForum, thread #12417071, November 2024
That's the trade-off: locked-in drawer storage for 90kg, or a modular L-Track platform you can reconfigure on every trip. Most owners doing active expedition or overlanding use choose the rails.
"I look at the bed option then wonder if I use it, then where do I store all the 'might be needed' gear I brought along.... Unless it's like Schrödinger's cat and the bed and gear and me can all exist in the same space."
— denism, TheIneosForum thread #12417071, November 2024
The Retrofit Question
Many US buyers received their Grenadiers before the accessory market was well-established. Early forum threads asked simply whether any US companies were making dedicated Grenadier gear at all. That question has an answer now — but it still leaves owners who skipped the factory rails in a familiar spot: can you add them after delivery?
The answer is yes, with one catch. The factory Interior Utility Rail System mounts at three points per side. Grenadiers not ordered with the rails have two pre-drilled holes per side in the loadspace; the third hole requires cutting through the cargo liner nubbin to access the mounting point. It's a 30-minute job, not a fabrication project.
"Super simple — started by using a razor blade to cut the nubbins hiding the middle bolts in the cargo liner, then remove the standard OEM tie-down points, used four black plastic plugs to fill the holes in the floor that are not used, then installed the rails with three bolts per side."
— TheIneosForum member, Retrofit Interior Utility Rails thread #12415305, April 2024
The factory route — ordering OEM rails through a dealer — works but involves waiting on parts availability and paying INEOS pricing. The DVA aftermarket option ships from a US-based operation and installs at the same factory mounting points.
DVA Interior Utility Rails — Better Than OEM
The DVA Interior Utility Rails are precision-machined from 6061-T6 aluminum with a hard anodized finish. The OEM rails use a comparable profile; DVA's version offers enhanced fatigue resistance and corrosion protection — relevant for vehicles that get used hard, driven in weather, and washed with pressure washers.
Installation uses the same three factory mounting points per side. The kit includes both driver and passenger rails, OEM-equivalent hardware, and installation instructions. The bolt-on process mirrors what forum owners describe for the OEM retrofit: cut cargo liner access for the center hole, swap out the standard tie-down rings, torque to spec.
| Spec | DVA Interior Utility Rails | OEM Factory Rails |
|---|---|---|
| Material | 6061-T6 aluminum, hard anodized | Aluminum, OEM finish |
| Rail profile | Standard L-Track | Standard L-Track |
| Mounting points | 3 per side (factory locations) | 3 per side (factory locations) |
| Fitment | Grenadier Station Wagon, all years | Grenadier Station Wagon, all years |
| Availability (USA) | Ships from US, in stock | Dealer order, variable lead time |
| Compatible hardware | All standard L-Track accessories | All standard L-Track accessories |
L-Track Compatibility — What Actually Fits
The forum spent considerable time in 2024 confirming what INEOS never explicitly stated in the spec sheet: the Grenadier rails are standard L-Track, and standard L-Track hardware fits.
"It uses a size commonly used by others. So all the tie downs I bought fit the L Track, and I bought three different types."
— thedocaus, TheIneosForum thread #12416183, July 2024
"Looks like there's some new accessories on Amazon now that the Cybertruck has the same mounting rails. Not bad looking, but I don't need/want stationary mounts and prefer the ones that move around with a push of a button."
— ineos-og, TheIneosForum thread #12416183, July 2024
The practical implication: the L-Track hardware market is large, cross-platform, and competitive on price. Quick-release tie-down rings, sliding cargo hooks, organizer brackets, and custom-machined attachment points from a wide range of manufacturers will all work with the Grenadier's rails — OEM or DVA — without modification.
What DVA adds beyond raw compatibility is system coherence. The same DVA cargo ring and tie-down hardware that mounts inside the trunk also fits the exterior Utility Belt and the DualTrack roof crossbars. You're not buying three separate product families — you're extending one platform.
The DVA Vehicle Utility Platform — Interior to Roof
The Interior Utility Rails are the foundation layer of a three-zone cargo system. DVA designed each zone to share hardware and attachment logic, so what you learn in the trunk applies topside and externally.
Interior — Trunk L-Track Rails
Two trunk-side rails on the driver and passenger bulkheads. Accepts quick-release rings, hanging organizers, sliding tie-down points, and rigid mounts for fridges, drawers, and storage boxes. The foundation of the interior cargo platform. DVA Interior Utility Rails install here.
Exterior — Utility Belt
The DVA Exterior Utility Belt mounts to the Grenadier's exterior body — a dedicated accessory rail that extends cargo attachment capability outside the vehicle. Same L-Track profile, same hardware compatibility. Designed for recovery gear, fuel cans, chainsaw mounts, and cargo you want accessible without opening the tailgate. The tie-down rings from inside will clip directly to the exterior belt without modification.
Roof — DualTrack Crossbars
The DVA DualTrack system mounts to the Grenadier's roof rail attachments — not sliding T-bolts on the factory rails, but the dedicated attachment points INEOS built into the roof structure. Each crossbar runs dual rows of full-length L-Track. A 2-bar configuration handles 200 lb static / 100 lb dynamic. The 4-bar kit doubles that to 400 lb static / 200 lb dynamic. Same L-Track profile means the same hardware ecosystem throughout.
The three zones together — interior rails, exterior belt, roof crossbars — form what DVA calls the Vehicle Utility Systems platform. Every square inch of the vehicle carries load, organizes equipment, or mounts accessories. Each zone is modular, tool-accessible, and reconfigurable per trip.
"This system transforms the Grenadier's trunk into a modular cargo platform. Whether it's coolers, recovery gear, or a camp setup, these rails are the foundation for true customization and secure load-outs."
— DVA Mechanics, TheIneosForum thread #12419915, September 2025
Cargo Power — DTP and the 400W Socket
Every Grenadier ships with a 400W power take-off in the loadspace — that's the primary power source for fridges, compressors, and electronics in the cargo area. The DTP (Dual Transfer Power) system provides additional circuit options through the auxiliary switch panel in the cabin.
How owners use the power circuits depends on where they position their fridge and how they want it switched:
- Cargo socket (most common): The 400W socket is ignition-switched and provides a direct, simple connection. Fine for most portable fridges under 40–50W average draw.
- DTP-to-Anderson SB50: The DTP system can be extended to the roof area or through the cargo bulkhead using an Anderson SB50 adapter — this is how roof-mounted accessories access the vehicle's aux circuits.
- Under-seat routing: Some owners run wiring from the front auxiliary circuits under the rear seat for a cleaner installation that doesn't depend on the cargo socket position.
The DVA Cord manages power routing for cargo setups — purpose-built for the Grenadier's circuit architecture rather than generic van wiring solutions.
Build Order for US Owners
New to the Grenadier or planning your first accessory install? Here's the sequence that makes sense given how the platform components depend on each other:
Recommended Build Sequence
- Floor liner first — before any hardware, so you're not cutting liner notches after the fact. The cargo liner sits beneath rail mounting hardware. Do this before step two.
- Interior Utility Rails — the foundation. If your Grenadier came without them, order the DVA bolt-on kit. 30-minute install, factory positions, no drilling required beyond liner access.
- Tie-down hardware — add quick-release rings and sliding tie-down points to the rails. Standard L-Track profile means broad hardware availability. Start with 4–6 points for general use.
- Fridge power setup — pick your power method (cargo socket, DTP extension, or under-seat routing) and cable before installing a fridge slide or fixed mount so wiring runs cleanly.
- Roof crossbars — if you're carrying rooftop load (recovery boards, lighting, Starlink, bike carriers), add DVA DualTrack crossbars. Mount to the roof rail attachments, not the factory sliding rail slots.
- Exterior Utility Belt — for recovery gear, fuel carriers, or exterior cargo that needs to be accessible from outside. Installs on the exterior body, shares hardware with interior rails.
What US Owners Actually Install
Based on forum patterns since the US launch, the interior accessory cluster breaks down roughly like this:
| Use Case | What Gets Installed | Notes |
|---|---|---|
| Overlanding / expedition | Interior rails + rings, fridge slide, DVA DualTrack roof, recovery board carrier | Full three-zone platform build; rails stay in year-round |
| Daily driver + weekend use | Interior rails + rings, cargo liner, occasional fridge via cargo socket | Minimal footprint; rails enable flexible cargo every trip |
| Work / fleet use | Interior rails, fixed equipment mounts, drawers (separate from rails), DTP power | Drawer system requires choosing: rails OR drawer, not both |
| Sleep platform | Seats folded (71 ft³), floor boards or mattress directly on cargo floor | Works without rails; full-flat floor is the core asset here |
The Compatibility Note No One Mentions at the Dealer
If you're planning to add the OEM Loadspace Drawer later — or are comparing it against an aftermarket drawer system — the utility rail decision affects it directly. INEOS's own installation instructions require removing the Interior Utility Rails before the Loadspace Drawer can be fitted. The rails mount at the same structural positions that the drawer system uses for its mounting interface.
That means if you want a permanent drawer and a permanent set of trunk rails, you'll need to choose one or the other, or build a custom solution. Most US owners going the rail route add a rail-mounted cargo management solution — sliding boxes, drop-in organizers, or fixed cargo plates — rather than committing to the drawer's fixed footprint.
If a permanent flat floor for sleeping is your primary use case, and you're not frequently reconfiguring the cargo area, the OEM drawer system is worth evaluating. If your load changes trip-to-trip — recovery gear this weekend, camping gear next, a surfboard setup after that — the rails are the correct foundation.
The Interior Utility Rails are not a luxury upgrade. They're the mounting infrastructure that makes the rest of the cargo system work. Every tie-down point, every organizer bracket, every fridge slide depends on them. US owners who skipped them at order have a clean bolt-on path to add them now — and once the rails are in, the full three-zone DVA utility platform opens up: interior to exterior to roof, all speaking the same L-Track language.
Start with the DVA Interior Utility Rails. Add rings. Then work outward.