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Mercedes Benz C Class estate (2007 to 2014)

Atera SIGNO ASR carrier - 122cm AR2122 (includes locks)

£94.95
RRP: £110.00
Code: AR2122

Atera SIGNO cross bars are available, as a complete package, either in plastic coated galvanized steel or in aluminium.

These steel bars present a particularly low profile - only 40mm from the centre of the rail to the top of the roof bar - and are very easy to adjust and use.

Other features:

  • Modern design; they look good and feel good
  • There's real attention to detail, e.g. there are rubber strips to cut and place into the slots in the base of the bar to minimise wind noise, a feature not seen in other systems
  • The recessed lock is intrinsically much more secure than having an external lock. The right hand picture shows the special tensioning device / key in place
  • The clamps stay in position when the bars are removed, so there's no need for frequent readjustment
  • The clamps have an 'extra wide' setting for use on extra wide roof rails, making them truly universal for roof rails
  • The bars are available as a separate item should you move to a vehicle of significantly different width
  • Weight 4.9kg
  • Load carrying weight 100kg but be guided by the maximum permitted roof loading limit of your vehicle!
  • Roof bar dimensions 32mm wide by 22mm deep

Most of Atera's roof bars and accessories business is with the Original Equipment market, i.e. direct to the car manufacturers, where major customers include Audi, BMW, Daewoo, Chrysler, Fiat, Honda, Mitsubishi, Mercedes, Opel, Subaru, Suzuki, Vauxhall and Volkswagen. Atera’s reputation therefore speaks for itself and, (probably needless to say), all their products are TUV certified and quality approved to ISO 9001.

Important information about this car: It's not possible to open the panoramic sunroof when fitting roof bars to the roof rails on this vehicle.

4.74.7 based on 14 reviews

Atera SIGNO ASR carrier - 122cm AR2122 (includes locks) Reviews

- Vehicle type: MPV
Excellent all round from cost to service bought roof box and bike rack at the same time again excellent value for money I would definitely recommend and use again for any future purchases. Thanks from one happy customer
- Vehicle type: Estate
Great easy product to use so user friendly well worth every penny and the locking system is the best I've ever used. Well done
- Vehicle type: Estate
Atera signo roof bars- Great product, easy to install, fast delivery, I also purchased a set of straps which are a big help when loading my rooftop with various materials or ladders.
- Vehicle type: Estate
These bars were really easy to fit initially, in fact the hardest part about the initial fitting was reading the instructions! We've had them on and off a few times now and it takes less than 5 minutes. We're very happy with them and would recommend them to anyone.
- Vehicle type: Estate
I have purchased roof bars before for my last car, along with car mats and cycle carriers. Roof box has always given excellent no nonsense service, I would recommend then to everyone.
- Vehicle type: Estate
It performed exactly as advertised. Easy to fit and carried some 4m step ladders on a 350 mile round trip with no problems at all.
- Vehicle type: 4x4
Easy to fit look good spot on
- Vehicle type: Estate
Quick delivery Good communications and after sales help with a wee issue. Easy to build up. I use the bars with bike carriers and I can't fault them. I remove the bars when not in use and it takes 5 mins tops to remove the bars.
- Vehicle type: Estate
I bought the roofbars for carrying bikes (using additional bike fitments) on our VW Passat Estate. The bars look smart, are easy to use and fit the bars on the estate roof well. They are securely fitted using a key. The bars also represent good value for money when compared with other products on the market and arrived promptly with no problems. I have now had them for almost a year with no problems and anticipate they will last at least as long as I keep the car.
- Vehicle type: Estate
I carry whitewater kayaks regularly but remove the bars at other times to reduce wind resistance etc. I've found these Atera bars really quick and easy to fit and remove just using the tensioning key. The build quality looks great but I have only had them a month or so so cannot comment on durability. Loads better than the Cruz bars I had before. Highly recommended. Incidentally I also rate Roofbox customer service highly. Despite a couple of problems in the picking/packing department the service I received to sort this out was exemplary. Shame this isothermal exception not the rule with uk companies.
- Vehicle type: Estate
The roof bars are well made and once you have set them up once are very fast to fix every other time. I have only used them to support bike carriers so far and they have been perfect for this. They arrived promptly
- Vehicle type: Estate
Excellent value for the price - slightly noisy (the wind causes a marginally annoying flat whistle) but they are secure, simple to attach and remove and above all do exactly what they are supposed to do and keep the roof box up top.
- Vehicle type: Estate
Excellent quality and easy to install on my V50 estate - It was a little fiddly at first, but that was probably my ham-fistedness in truth. I bought these rather than the more expensive aero bars as I didn't want to leave them on the car all the time, and I get absolutely no humming sound from these bars, even on a dual carriageway. Thoroughly recommend these to anyone.
- Vehicle type: Estate
Perfect fit, easy to use, high quality.

About our reviews:

We test, and often use personally, almost all the products we sell, and we stand behind our comments and recommendations unless customers convince us they need changing. Our Customer Services and Workshop staff also have input into our recommendations.

But it's because we've learned a lot over many years that customer feedback is so important. Fresh, first time out opinions are the most useful ones, and in any event we certainly don't have access to the full range of vehicles that our customers have between them.

Product feedback from existing customers helps our new customers make choices, and also helps our suppliers with their product development.

We e-mail our customers a week or so after their order arrives and invite them to send in a review.

Some reviews are suitable for multiple products. Where appropriate we may, for example, use the same review for a number of different roof bar products where the only difference is the length of the roof bar.

The aim of this note is to persuade you that kayaks should always be tied to the carrying vehicle at both bow and stern.

Always tie down at both bow and stern

Untied kayaks have, in our experience, the greatest potential for a roof bar or kayak carrier failure. The massive forces that untied kayaks can generate have even been known to snap roof bar fixing bolts with the result that a complete assembly of roof bars and kayaks has ended up on the road. We know that this has happened with almost every brand of roof bar, and regardless of whether the kayaks are on a special carrier or just strapped to the bars.

You need to fix bow and stern lines, probably using the front and rear screw-in towing eyes to get strong and accessible fixing points on the vehicle. Kayak shops should be able to provide suitable 'paracord' for this purpose. Alternatively, we have sets of straps available that are perfect for the job and are really easy to use. Yakima make some excellent Bow/Stern tie down straps and Thule makes the QuickDraw 838 which we have listed together with every kayak carrier we sell.

Please note that kayaks should be strapped to the roof bars, or to kayak carriers, using straps that are suitable for the purpose, e.g. 25mm polypropylene straps with strong buckles. Bungee cords must never be used.

Please also note that all roof bar instructions point out the dangers of carrying unsecured long items, as of course do all kayak carrier instructions.

If you tie down your kayaks properly you almost certainly won't experience a product failure. If you don't you may or may not get away with it. If there is a disaster and the kayaks end up on the road, separated from the vehicle, then you were not using tie downs and you have subjected the roof bars to forces for which they were not designed. The costs of sorting this out are yours, not ours, and you may also have difficulties with your insurers.

We're sorry to be so firm about this, but "things coming off the tops of cars" is the stuff of nightmares, and we want to do all we can to prevent accidents of this sort from happening.

To find the spare parts you need, including spare keys, please click here or on the pdf symbol below, identify the product codes, then choose them from the list below. If you need more than 1 of any item, change the quantities in the Shopping Basket.

We try and keep spare parts in stock but if the part you order is not in stock we will get back to you ASAP to let you know how long it will take to order in.

Item: Description: Our price (each): RRP:
Atera spares: 092 10X - Spare key (x1) for Atera roof bars, key number TBC £7.50
Atera spares: 092 071 - Atera SIGNO aluminium bar end cap x 1 £0.75
Atera spares: 088 184 - Atera SIGNO steel bar end cap x 1 (9945700105) £0.50
Atera spares: 088 344 - Atera Signo bars rubber lock cover £0.90
Atera spares: 092 11X - Atera SIGNO ASR outer part of foot (x1) (lock no. TBA) £12.95
Atera spares: 093 357 - Atera threaded rectangular metal plate £1.50
Atera spares: 088 284 - Atera foot clamp component part no. 6 (for roof rail bars) x 1 £2.25
Atera spares: 082 281 - Atera outer rubber pad (for roof rail bars) x 1 £0.75
Atera spares (small): 088 282 - Atera inner rubber pad (for roof rail bars) x 1 £0.95
Atera spares: 088 285 - Atera sliding plastic foot for Signo rail bars £4.75
Atera spares (small): 092075 - Atera aerobar rubber strip for top of bar (per metre) £2.50
Atera spares: 088 363 - Atera 30mm rubber tube Signo bars £0.75
Atera spares: 092 043 - Atera signo bar underside rubber strip (9919700143) £2.50
Atera spares (small): 087 582 / 9910700009 - M6 washer £0.25
Atera spares: 087 702 - Atera 25mm M6 Hex bolt £0.70
Atera spares (small): 087 895 / 9922700054 - Atera signo bar allen key (4mm) £1.50

Delivery charges and arrangements:

We charge a contribution towards delivery costs, depending on what you order, where you live, and how quickly you want the goods.

These are our standard charges; there are usually surcharges for all offshore destinations and some remote postcodes - for details please see our delivery information page.

This Item (Standard sized items)
Express Delivery £ 9.50 1 to 2 working days
Standard Delivery £ 6.50 3 to 4 working days

Delivery of other items

Small items & Spare parts
Express delivery £ 6.95 1 to 2 working days
Standard delivery £ 4.95 3 to 4 working days
Roof boxes
Express Delivery £ 19.50 1 to 2 working days
Standard Delivery £ 14.50 3 to 4 working days
Dropracks and Roof tents
Express Delivery £ 19.50 2 working days

Delivery times

Delivery times are calculated in working days (Monday to Friday, excluding Bank holidays).

Cut-off times for Express Delivery orders
Express Delivery orders placed before before the cut-off times shown below will usually be desptached on the date of order. Express Delivery orders placed after these cut-off times will be despatched the next working day.

Small and Standard Sized Items Order by 4pm for same day despatch
Roof Boxes, Dropracks and Roof Tents Order by 1pm for same day despatch

Delivery FAQs

When will my order arrive?
There are no deliveries on Saturdays, Sundays or Bank Holidays, except for postable items where Royal Mail has a Saturday delivery. Express Delivery orders placed on a Friday (before 1pm) should be delivered on the Monday or Tuesday, Express Delivery orders placed on a Saturday or Sunday should be delivered on the Tuesday or Wednesday. The arrangements for Very Heavy Items are different and are shown above.

What about Next Working Day delivery?
We have offered a reliable Next Working Day service for well over 20 years but, due to the pressure on the couriers caused by the coronavirus crisis and the huge increase in online shopping, we can no longer be confident about the delivery date, which is why we now call the service ‘Express delivery’. Most Express delivery orders will arrive on the next or second working day, but some will arrive on the second or third working day, or be split between these days. So-called “split deliveries” happen when the couriers do not have enough trailer space for everything that should be moved around the UK, so they will load what they can and leave the rest for the next trailer.

Is my delivery day guaranteed?
No retailer or courier company can ever "guarantee" a Next Working Day delivery. As well as split deliveries, all courier companies occasionally have the same transport problems as can happen to everyone else, including snow blocked roads, closed roads, traffic jams, mechanical breakdown, an inability to find the delivery address, or to gain access to it if, for example, it's in a block of flats. We work with some of the best couriers in the business, and overall they provide an outstanding service.

Do I need to be at home?
We are very flexible with our deliveries and will aim to deliver to an address which suits you – this does not need to be your home address. Goods can usually be left without signature - we prefer this with roof boxes. There's a "Special Delivery Instructions" box in the checkout area where we'll ask you to choose a typical instruction and then amend it to suit your particular requirements.

Payment options:

We take the following cards, and also PayPal. Please note that the entry on your card statement will be from "The Roof Box Company".

PayPal accepted

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Add to Your Order Untick if not required:
Item: Description: Our price (each): RRP:
Core components:
Atera SIGNO ASR bars: £94.95 (rrp. £110.00) Auto Express best buy
Special offers:
FASTY promotion: £10.00 (rrp. £15.00)
FASTY promotion: £2.25 (rrp. £4.50)

All our prices include VAT at 20% Total: £94.95
 Description 
 Reviews 
 Carrying kayaks, boats or boards 
 Spare parts 
 Delivery charges and Payment options 
 Fitting instructions and videos