Make it exactly the rig you want.
Every Rossmönster leaves the shop trail-ready. These are the additions and changes you can fold into your build before it starts — with what each one costs, and which models it fits.
Built in before the build begins.
Filter by your model to see only what fits it. Prices are added to the Adventure Ready price on your order form.
Bumpers, suspension & recovery
CATuned Sprinter front bumper. Shipping and install included.
Full-coverage pre-runner bumper.
Full brush guard, in place of the standard Bodyguard bumper.
Install included.
Standard on both Bajas.
Inverted rally strut upgrade.
Rossmönster MaxTrax table with a set of MKII recovery boards. Standard on both Bajas.
Better accommodates the full-size spare.
*Adds weight and can affect your payload at delivery. GVWR limits mean this option needs an in-depth call with your build team before we add it.
Underbody protection
Owl Vans pro series, for the 3500 chassis.
Wheels, tires & spares
Rear-wall carrier with a full-size spare tire and wheel.
Tire only.
Storage & carriers
Mounted on the rear of the camper. Pick up to three storage boxes in total.
Full-width box with a 2/3 awning door and a 1/3 swing door.
Driver side only on the Loft.
Loft-specific: the standard-size box does not clear the spare tire.
Installed on the rear wall.
Installed over the cab.
Lighting
LR750 Elite SAE.
Bikes, racks & rooftop
Black, with horizontal bike tubes. Install included.
Aluminess base unit, two 1UP bike trays, battery kit and install.
Includes KC lights on the Skye.
Water, bath & kitchen
Recirculating shower system.
Added to the cold water line at the sink.
Replaces the middle drawer on the passenger side.
Power, fuel & connectivity
Starlink Mini with a trio flat mount on the roof. Subscription not included.
Trio flat mount, no dish.
Replacement Sprinter fuel tank. Recalibration is needed for an accurate range reading.
*Coming soon for the Loft — ask where it is in the queue.
Recalibrates the gauge for the larger fuel tank.
Seating & interior
Floorplan option.
Floorplan option.
Top-load storage with a folding backrest.
Quick-release base and a 3-point seatbelt. Tax, shipping and install included.
Black cloth, install included. Price is per seat.
Extends the backrest along the rear wall.
Standard on the Baja Plus.
Exterior & protection
Raptor guard on the lower body up to the waterline.
Vinyl hood wrap in matte black, with the Mercedes badge blacked out.
*Exact price depends on the finish you select.
Final price depends on the colour you choose. Interior door jambs are not painted.
Delivery & hand-off
We trust our dealer partners to hand a rig over well — this is for the customers who would rather collect theirs from the people who built it. An additional pre-delivery inspection at the factory, unhurried time with our team for a full walkthrough of every system on the rig, and a hand-off we see through end to end at Rossmönster HQ in Longmont, Colorado.
Nothing matches that yet — try another model or clear the search.
How to read this list. Every price is an addition to your model's Adventure Ready price, and includes parts, install and any freight unless the line says otherwise. Anything already standard on your model won't appear as an option for it.
Timing matters. Orders can't be changed inside three months of your estimated delivery date — parts have to be ordered and on the shelf before the build starts. Earlier is always easier.
Prices are current as of today and can move with supplier costs and the material you choose. Your dealer confirms final pricing on your order form.
Same rig, your materials.
These aren't add-ons — they're swaps. Same fixture or surface, a different colour or material, chosen before your build starts.
Why they carry a price at all is a question we get a lot, and it's a fair one. We build the same rig the same way every time — that repetition is what holds the quality steady and keeps the Adventure Ready price where it is. A change steps outside it: the material has to be sourced as a one-off, re-measured and re-fit by hand, and sequenced so your delivery date doesn't move and neither does the build behind yours. What you're paying for is the material and the work it takes to get it exactly right on the first pass.
Change a material
A different floor material. Final price moves with the material you pick.
Same surface, different colour or material.
Same cabinet, different wood.
Custom material for the dinette only, not the walls. Final price moves with the material.
In place of the standard sink and folding faucet.
A different toilet in place of the standard cassette. The cassette door stays on the exterior.
A different toilet in place of the standard cassette. The cassette door stays on the exterior.
Nothing matches that yet — try another model or clear the search.
Final pricing on a material change depends on the material you select, so treat these as the starting point and confirm on your order form.
Questions we get on options.
When do I have to have my options locked in?
Three months before your estimated delivery date. After that the order is closed — parts have to be ordered and physically here before your build starts, so a late change pushes the whole build. If you're weighing something, raise it early and we'll help you decide.
Is install included in these prices?
Yes. Unless a line says otherwise, the price covers the part, the labour to fit it, and any freight. That's why a bumper here costs more than the same bumper bought loose.
Why don't I see an option listed for my model?
Usually because it's already standard on that model — the Baja Plus ships with a 16,000 lb winch and an air compressor, for instance, so neither shows up as an add-on for it. A few options are also chassis-specific. Filter to your model and you'll see only what genuinely applies.
Can I add something that isn't on this list?
Often, yes. We build custom work all the time — tell us what you're after and we'll price it and tell you honestly whether it's something we can do well inside your timeline.
Can I add an upgrade after I take delivery?
Many of them, yes — through our service department rather than the build line. Pricing can differ once the rig is assembled, so it's worth asking before you decide to wait.