Koni Shock Question

[Amstaff]

I recently purchased a 1973 911 that has been highly modified. After a lot of work to get it on the road took it for a front end alignment and found that the strut (shock) is bad. It is a red Koni with the number 91134108010. My question is does this shock fit a Koni strut, a Boge or Bilstein? I searched the web buy couldn't find it.

Thanks for your help

[RSTarga]

What struts do you have? I have Boge struts and run the gas/hydraulic adjustable Koni. I don't think a Bilstein strut will take a Koni, but Koni would know best.

[Amstaff]

How can I tell what brand the strut is? Does it say somewhere on it?

[RSTarga]

Yes there should be an engraved lettering on it. Black housings are usually Boge, red Koni. What year is your car?

[Amstaff]

It is a 1973 but it has been highly modified as it was a race car for about 10 years. It has all updated suspension under it.

[Canada Kev]

Often the colour will tell you - green or yellow=Bilstein, red=Koni, black=boge or sachs.

[Amstaff]

Thanks, I will get under it tomorrow to see what color they are. If they have been painted is there another way to tell?

[Flieger]

Konis have a bulge just above the spindle collar, but the Boges also have one, but it is much smaller I believe.