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BMW X5 (2007 to 2013)

Yakima roof bars package - S46 Aero-X bars

Code: YK_S46_003

Whispbar's Aero-X roof rail bars are almost silent in use and have a negligible impact on fuel consumption. And because they look superb you're likely to leave them in place semi-permanently.

The amount of gear you can carry on the Aero-X is limited by the length of the T-track slot, so if you do need to carry e.g. a roof box and bike carriers, please also check out the "through bar" option with fitting kit 328.

Whispbar's Aero-X roof rail bars not only include the award winning aerofoil-shaped bar but are ultra-low profile; they fit between the roof rails. If you're just carrying a roof box or a couple of bikes or kayaks this might be ideal, but if you want to maximise the load carrying potential of your car then you should be looking first at Whispbar's "through bar" system with fitting kit 328. Please note that it doesn't matter if the edge of a roof box rests on the plastic covers at each end of the Aero-X bars - just be sure before ordering that the T-track slot is as long as the distance between the roof bar fitting points in the roof box.

If you have a sunroof and intend to use this then we'd recommend that you use a bar system that sits higher on the roof, e.g. the Whispbar "through bar" system with fitting kit 328.

Basic geometry:

  • These bars fit to longitudinal roof rails which are between 104cm and 111cm apart (up to 114cm apart when the bars are at full stretch).
  • The T-track slots on these bars are between 85cm and 92cm long (up to 95cm long at full stretch), i.e. they are 19cm shorter than the distance between the roof rails.
  • If e.g. your roof rails are 107cm apart (inside face to inside face) then the T-track slot will be 107cm less 19cm = 88cm long.

Other features and specifications:

  • These bars look good and sound good, but they also feel good. They're beautifully made, are supplied fully assembled, and are relatively quick to fit.
  • They have a maximum loading limit of 75kg - but please check your vehicle's load limit as it may be less than this.
  • All roof boxes, and all accessories that can be fitted to Atera or Thule aerobars, can be fitted to Whispbars.
  • Other manufacturers supply a rubber strip that you need to cut and press into the bar between the accessory fixings. But not Whispbar – the Smartfill rubber is already in place, within the slot. Another first for Whispbar!
  • Please note that because Whispbars are 85mm wide you will need T-track adapters to fit almost all products except a limited range of roof boxes. If you are buying Whispbars on their own, check your roof box fittings to see if they are wide enough and be sure to order what you need!

Whispbar was recently purchased by Yakima, one of the two largest brands in the global car rack systems sector. Whispbar was the culmination of many years of design and innovation by Hubco Automotive; their chief designer transferred his aeronautical design experience and know how to the roof rack sector, working closely with the engineering school at the University of Canterbury, New Zealand.

To summarise, Whispbar is the bells and whistles system without the whistles!

But don’t just take our word for it – hear it for yourself. Hubco engineers built a mini wind tunnel when they launched Whispbar at the Frankfurt Automechanika trade fair. Turn up the speaker volume and be blown away!

Experience the Whispbar in action


As an arm twister, a thank you for buying from us, and to show off these incredibly useful products, we'll include one free Fasty HANDY with every set of bars you buy, while stocks last - see pop up link for details.

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.

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.

For most UK addresses, the charge for our two to three day service is £5.50 (£9.50 for orders including a roof box) and our charge for Next Working Day deliveries is £8.50 (£12.50 for orders involving a roof box). AutoSock, shoe chains, RUD i-Sock, and small spare parts, are charged £3.95 (Royal Mail Tracked), £4.95 (Royal Mail Express Tracked) or £5.95 (express courier, usually Next Working Day).

There are different charges for any delivery including a sea crossing, and deliveries to Skye - we will contact you with a quote on receipt of order.

Orders for Next Working Day delivery need to be received by 4.00pm.

There are no deliveries on Saturdays, Sundays or Bank Holidays, except for postable items where Royal Mail has a Saturday delivery. Next Working Day orders placed on a Friday will be delivered on the Monday, Next Working Day orders placed on a Saturday will be delivered on the Tuesday.

We are very flexible with our deliveries and will aim to deliver on a day and at an address which suits you. 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.

No retailer or courier company can ever "guarantee" a Next Working Day delivery. 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.

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

Secure payments

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Add to Your Order Untick if not required:
Item: Description: Our price (each): RRP:
Core components:
Yakima Aero-X roof rail bars: £169.95 (rrp. )
Special offers:
Free FASTY Handy strap: £0.00 (rrp. £4.25)
FASTY promotion: £7.50 (rrp. £15.00)

All our prices include VAT at 20% Total: £169.95
In Stock - Get it by Friday 20th September
 Carrying kayaks, boats or boards 
 Delivery charges and Payment options