Bilstein B4's on Seat Leon Xcellence Lux ST

[BradleyH]

Good morning, Ladies and gents.

I would eventually like to upgrade my dampers to Bilstein B4's as I want an OE replacement that is "sportier" than the standard ones.
I have a 2019 Seat Leon Xcellence Lux ST, and I can see there are 50mm and 55mm "Housing diameter in clamping area" which I have no idea what that means, my boss has told me there may be a collar that goes around the bottom of the damper and the 50mm and 55mm will be the actual housing diameter on the bottom of the damper and then a locking pin will secure the damper to the rest of the suspension gear and wheel hub.
So my main question is, before I go writhing on the floor with a vernier can someone tell me if they know what the "Housing diameter in clamping area" is on a 2.0TSI Xcellence Lux is.
I have the part number from the originals and it is 5Q0413031FH.

Any help is appreciated as always, and sorry if this post has been repeated before.
Bradley

 

[nd-photo.nl]

I believe that is the diameter of the shock/strut where the strut is housed in the knuckle. Shocks are either clamped in the knuckle, or bolted to the knuckle.

 

[BradleyH]

I believe that is the diameter of the shock/strut where the strut is housed in the knuckle. Shocks are either clamped in the knuckle, or bolted to the knuckle.

Thank you for the information mate, it is a way away yet but I’d love to get it done to have a slightly better OE set up. Especially for if I get it tuned

 

[SuperV8]

The B4's are not sportier than OE.
It would be the B6 or B8 which are 'sportier'

The 55 or 50 is the body diameter and needs to match what's on the car.
I can't see 5Q0413031FH in the part catalogue for the 2019 Leon.

 

[BradleyH]

The B4's are not sportier than OE.
It would be the B6 or B8 which are 'sportier'

The 55 or 50 is the body diameter and needs to match what's on the car.
I can't see 5Q0413031FH in the part catalogue for the 2019 Leon.

Afternoon Super, that is from consumer reviews just saying that they’re more compliant and don’t feel as bouncy as genuine dampers is all sportier may have been the wrong descriptive word.

thanks for the information on the body diameter, I will get you the picture from the shock absorbers part number

 

[SuperV8]

I'm using Bilstein B4 front and rear and they don't feel any different from my OE dampers to me (obviously less knackered!).

This is how Bilstein describe them:

Bilstein doesn't recognise that OE number but Monroe and Sachs both link that number to a 55mm damper.

 

[Bahnstormer_vRS]

I'll concur with SuperV8.

The Bilstein B4s are a great 'improved quality' shock over OE spec ones, that will give you the same ride / handling feel but just 'better'; although let's face it any new shock should feel better and tighter than your current 6 years old xx,000 miles OE ones.

The B6s are a step up and will give a sportier feel with tighter body control / better handling etc. They're ideal if you want to upgrade to a 'Cupra'.

I ran B6s on a Skoda Yeti for many years that helped make it into a vRS.

Guy

Sent from my Galaxy S23 Ultra using Tapatalk

 

[nd-photo.nl]

Exactly, I have had B4s before and they are a great replacement. But they feel good, because they are replacing worn shocks in the first place.

You can see if there are some better springs (Eibach/H&R) to replace the stock springs, as stock springs (lineair) are designed for comfort and aftermarket springs usually are a bit stiffer ("sportier", progressive).

Might also be worth considering

See pics below, I replaced OE suspension with Bilstein B4 with Vogtland springs on my then Volvo S80 2.4T with +300.000km on them