What Type of Bike Carrier do i need

If you want to get an answer through "official" channels then the way to go would be to ask the question of the dealer that sold you the van. They will then contact A/S and ask the question via their "dealer" contact point.

Don't expect a quick answer, but you should get one eventually. It may help if you imply that you intend to buy the bike rack from the dealer (even if you don't intend to!).

If it's a 4000kg Duo it should have sufficient rear axle capacity but it's worth checking.  The handbook is clearly wrong as it gives the axle MTPLMs as 1850kg front and 2000kg rear which are the values for the 3500kg version.  The handbook states that the cycle rack fixing points are for a Fiamma Pro-C and that the maximum load is 60kg.  This includes the mass of the bike rack and the bikes and their batteries if fitted and any other attachments like a bike cover, rear marker board and lighting board.  To stay within the regulations, a lighting board should be fitted.

You have probably studied this:

https://www.fiamma.it/image/data/ISTRUZIONI/Carry-Bike/98690M071_revB.pdf

I couldn't see the mass of the rack.  The mass of a decent cycle lock also needs to be included within the overall allowed mass of 60kg.  It shows the angles that the rear lights & number plate must be viewable from.

The lighting board isn't difficult.  It's just a little bit of extra weight hanging off those wall mounted fixing points and it all adds up.

wilksy wrote:I have now had a look at fitting the rack to the existing bars but need a bit of advice please, as I'm sure you are all aware the Corinium comes with a lower and upper Fiamma fixing bar already in place however the rack is fitted to the bottom bar by just inserting in the corresponding holes, however how does the rack fit into the top rail?

The pictures and instruction show the rack being installed on hooks as opposed to a rail, could anybody tell me what they have done.

Can't help really as my dealer insisted on fitting it when I bought the van.

IanH wrote:The lighting board itself  may not be difficult but plugging it into the electrics could well be in a 2021 van.
I feel that the whole overall weight, even if within limits (whose) is way more than I'd even consider.
Not only does it have to be supported by the rear wall reinforcing (??) it is a long way aft of the rear axle centre line, again even if in limits its a big mass so far aft.
Not something I'd even consider but, as always on here, each to his/her own!
Good Luck

BTW can your rear camera see the bike once in place? Lot of money to have unseen.

If the 2021 models still have the VLM5 unit which I think they do, connecting a lighting board is straightforward and inexpensive.  I agree carrying weight that far back isn't good but the bike rack fixing points on the back wall are reinforced.  I only take a bike if I'm sure its going to be used.  Invariably that means I only take my bike and sometimes I don't take that.  On my Nuevo I can just see its saddle through the mirror and kitchen window which is reassuring.

wilksy wrote:Thanks for the reply Caraman, could you post a picture of how it was fitted, I've spoken with Marquis now and they have told me what they do but I could do with a picture if honest.

If you need a different angle, let me know