Hi all. I’m looking to upgrade the rear springs on my Octavia estate to heavy duty ones, could someone please advise me on what ones to get and where to purchase from??

Thank you

8 hours ago, Mickmac73 said:

Hi all. I’m looking to upgrade the rear springs on my Octavia estate to heavy duty ones, could someone please advise me on what ones to get and where to purchase from??

Thank you

If it's an Octavia MK2 estate FWD (not 4x4) with standard ride height (not lowered ride height or increased ride height), then gknautomotive suggests 1K0511115BF as the standard ride height rear spring or 1K0511115BG as the reinforced (with towbar, etc.) standard ride height rear spring.

Kilen 63118 would be a good starting point.

Kilen 63118 (matches 1K0511115BG)

https://www.ebay.co.uk/itm/191411932143

Edited 3 August, 20253 Aug by Carlston

I fitted KYB HD springs to my mk2 1.9tdi estate. Made a big difference when fully loaded but found it a bit bumpy when empty. I then replaced the shocks as all though they looked ok I reckon they were weak. Car was excellent after that. There were two options one for sports suspension and the other for standard. Part numbers for mine were RH6789 for HD springs standard suspension. According to KYB cat its RA6162 for sport suspension.

Alasdair

3 hours ago, Alasdair1 said:

...According to KYB catalogue it's RA6162 for sport suspension...

RA6162 is an increased ride height rear spring because it's sold to replace 1K0511115CS and is sometimes used on the Octavia MK2 4x4 Scout.

The HD (Heavy Duty) rear spring that KYB lists in their catalogue is much stiffer than 1K0511115BG because the HD rear spring that KYB lists has a wire diameter of around 12.5mm whereas the 1K0511115BG has a wire diameter of around 11.75mm.

The Octavia MK2 catalogue lists ten different rear springs for the front wheel drive standard ride height car, in increasing levels of stiffness as you go from 1 to 10 in the list.

The HD KYB is around 8 or 9 in the list due to its 12.50mm wire diameter, although KYB don't give the OEM part number that it's sold to replace.

Other options to 1K0511115BG include number 6 and 7 in the list. These would give a stiffness somewhere in the middle of the number 5 and number 8 in the list.

1K0511115BG (number 5/10 in the list) (One aftermarket brand lists this rear spring as having an 11.75mm wire diameter)

https://www.autodoc.co.uk/car-parts/oem/1k0511115bg?supplier%5B%5D=253&supplier%5B%5D=246&supplier%5B%5D=32

1K0511115BH (number 6/10 in the list) (One aftermarket brand lists this rear spring as having a 12.00mm wire diameter)

https://www.autodoc.co.uk/car-parts/oem/1k0511115bh?supplier%5B%5D=253&supplier%5B%5D=32&supplier%5B%5D=246

1K0511115DE (number 7/10) in the list) (One aftermarket brand lists this rear spring as having a 12.25mm wire diameter)

https://www.autodoc.co.uk/car-parts/oem/1k0511115de?supplier%5B%5D=253&supplier%5B%5D=32&supplier%5B%5D=246

Edited 4 August, 20254 Aug by Carlston