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Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 6:39 pm
by matteo68
I want to fit Bilstein dampers to my S-R (GeLo had them, rather than the factory Konis, plus my donor T had monotube Bilstein struts and Bilstein rears). However whilst I know I want green not yellow, I’m completely confused by the Bilstein website!

Can anyone explain what’s what as there seems to be B4, B6 and B8 damper options, and then Standard, Sport and Club Sport versions of the B6?

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 7:06 pm
by 911hillclimber
You need Gary71!

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 8:45 pm
by hot66
I have yellow rear and green front … both custom valved to a Tuthills fast road spec

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 8:46 pm
by matteo68
Your car is so non standard!

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 8:51 pm
by hot66
Little tweaks here and there ;) :lol:

Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 9:13 pm
by Gary71
I don’t know :)

I’ve got Bilstein B6 (sport?) on mine with std torsion bars lowered about 20mm from std and wouldn’t want for more. Honestly I’m a fussy bugger with damping, particularly rebound overshoot, and these are spot on.

For a more track focused ST with stiffer (?) torsion bars you’d want more overall damping to control the springs.

My old TT has B8 on std S-Line springs and they are ridiculously over damped so be careful, but every application will be different.

Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 9:30 pm
by Gary71
If you speak to the guys at Bilstein UK they are really helpful and may help unpick the options available.

Zakir Kahn was the useful chap I spoke to

Having just looked at the website I see the problem!

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 9:32 pm
by matteo68
Thanks Gary, I’ll give try and give him a call tomorrow!

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 9:52 pm
by Gary71
Mine are yellow ones if that helps, think they are sport, but I can’t find the invoice so who knows :)

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 10:05 pm
by hot66
From memory back In the old days yellow was sport , green was HD

Re: Bilstein damper advice wanted!

Posted: Wed Jul 30, 2025 10:54 pm
by 911hillclimber
Gary, you told me several times yours were Yellow sport.

I had custom valve'd Bil dampers spec'd by Bob Watson for my hillclimb car (stock front bars, 3 litre Turbo rears) when I installed the heavier 3.2 engine/box in 1995.
They were great.
The rears leaked after about 15 years and I replaced the rears with KONI sports set mid-way in the adjustment range. These came off the car to make way for the Bil dampers.
Seemed about the same to me then, and worked really well at Shelsley Walsh last weekend.

Proper damping is a game changer.

Re: Bilstein damper advice wanted!

Posted: Thu Jul 31, 2025 8:08 am
by matteo68
Well if I can get a definitive answer from Bilstein UK, I’ll post it here.

Re: Bilstein damper advice wanted!

Posted: Thu Jul 31, 2025 9:14 am
by Boydyrs
Ask for David Brown at Bilstein, really helpful and knowledgeable guy.
They can valve/build the shocks to to any spec required and will offer best advice sited to car
If you have shocks already it’s incredibly great value

Re: Bilstein damper advice wanted!

Posted: Thu Jul 31, 2025 9:35 am
by matteo68
Thanks Boydy! We want to reuse as much as possible from the donor car so to get the existing shocks rebuilt to custom spec and refurbished would be a great result!

Re: Bilstein damper advice wanted!

Posted: Thu Jul 31, 2025 10:46 am
by sladey
+1 for David Brown. I turned up with no warning and my shocks in a bag and his opening comment was that I was running my 911 lower than stock! He knows his stuff