You can get them from the dealer, I believe.
They were standard on the AMG's at one point.

 

They do look great on the car but have a downside in that they really catch the sunshine and reflect lots of light, took mine off in the end. Got them on eBay.

 

I never had that problem and the fins on my SL are about 3 x bigger and I don't have a problem with reflections from them either.

 

I purchased mine from CKS Performance and glued them on with Tiger Seal UPOL. They still look great some 30 months later.

 

Got mine from CKS about 5 years ago. I thought they were bloomin expensive £65 at the time but they have worn well and never fallen off. They have specific lugs to ensure they fit in the correct order.

Maya~Taptalk

 

The R171 bonnet fins do have lugs as I bought a set for my 2010 SLK350. The R172 Bonnet Fins do not have these lugs and need to be stuck on either with 3M double sided tape or glue. I chose the Tiger seal UPOL glue.

 

Thanks for the advice Gent's, CKS performance it is.

 

Just placed an order with CKS PERFORMANCE Ltd for a set of Chrome Fins, was pleasently surprised they cost only £42 , really looking forward to getting them and see them on the car.

 

My are CKS ones and although I was a bit concerned they might come off I stuck them using the supplied 3m tape. I tried pulling one off but they are stuck firm. They have been on for 16 months now and are still stuck firm despite me washing the car weekly.
Just make sure you get them in the right place (they are handed) before pulling the protection off the tape and sticking them on.

 

I knew I woz robbed!

Maya~Taptalk

 

@osi But you've enjoyed them for 5 years!

 

Thanks Mugs for the hears up regarding the Fins are handed, wealth of friendly advice and help on this site.

 

See here for problems putting the fins on in the wrong order...

Attaching after-market Chrome Hood Fins

NOTE: Although the process is right, the execution was flawed. I matched up the lengths but forgot L and R sides :oops: Other than that.... Double and triple check if you do this for length and L/R side. I knew that but forgot ============================= Well, I finally got my plastic...

www.slkworld.com

I got mine from CKS and they look awesome on my Hyacinth Red SLC43
I used the tape that came with them and they are solid

 

Hi Mark,

Thanks for the information, everyone is so helpful in a positive way.

 

Just arrived via post, roll on the weekend so I can fit them.

 

Little tip - set them all in position and mark up the alignment with masking tape to ensure you are happy before sticking down

 

Thanks for the tip,
I have just opened the box and was hoping they would be identified LHS & RHS but they are not, I take it when members say they are handed they refer to keeping them in the order they came in , ie the 3 on the left must remain together and the 3 on the right must stay together?

 

@Sunny1 Yes, they are two sets, left and right with each set having a short, medium and long fin. Shortest to outside of grille with longest toward the centre of the bonnet. If you lay them on the grilles it should become obvious how they sit. Just don't mix them up as you stick them down ?

 

Different lengths AND make sure the little cut-outs are on the correct side. Easy to mistake the left short one for the right short one if you don't triple check ?

 

Yes, it’s the length and the cut outs that make them handed.
Put them on loose first then ensure they are in the right place before sticking as that tape sticks like crazy.

 

Hi All,
Just wondering if anybody has brought a set of chrome fins for the bonnet, if so where from.

I have seen these on Ebay UK STOCK Set CHROME Bonnet Grill Fins Hood Vent Trims for Mercedes R172 SLK SLC | eBay
But in all honesty I try not to purchase from Ebay (Cheap rubbish) I would much rather spend a little bit extra and get quality.
Regards
Sunny

I purchased genuine ones from MB for my R172. They came in a little kit with cleaner, sandpaper and glue. 100% perfect fit. Some (if not all) of the non MB units are stuck on with double sided tape and don't fit as well as the MB stuff. No masking tape etc needed and the covers are marked for correct positioning.

I was very happy with the look and the chrome was still perfect after 3 years asa daily driver.