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excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5846

1999 Defender 110 Td5 SW Caledonian Blue

Rear spring replacement

1999 TD5 110 SW (no rear side facing seats)
235/85 R16 ATs

I am due for new rear shocks, which will be standard LR ones so was thinking I might as well replace springs which have been on since 2015 and where new take off when purchased.

Current springs are Purple/Brown (RKB101111)
110 carries a draw of recovery gear (shackles/strops/pulley blocks) etc all the time.
When doing motorsport, it gets fire extinguishers/tool box a few other bits, plus tows a trailer.

I was thinking of swapping out to White/Green/Green (RKB500300)

Spring isolators are fitted and will be replaced with new ones.

Front of the 110 has a winch and winch bumper. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

26th Aug 2021 7:24am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

I've made that swap on my USW and it's a huge improvement - the ride is much more pliant. The purple/brown springs are designed with a 1 tonne payload in mind and unless you run anywhere close to that then the white/green/green are a great compromise.

More details here:

https://www.defender2.net/forum/post820610.html#820610 Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

26th Aug 2021 8:23am

geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

Hi John.

I have had both in mine and the difference was noticeable. I also had a similar setup to you in the back with drawers and no seats. Perhaps the RKB500300s were a little more supple on pot holed tracks and whilst off roading, flexing better, but after a while the vehicle sat back on its haunches a little more. Nothing major, just depends on what your preference is with regards to nose down/arse up or a flat centre line. As you can see in LRAs thread he linked to...

I went from the RKB500300s to the RKB101111s as I carry a constant weight in the back with the dog crates and filled drawers. More weight than just the four seats that were in there when I bought it. Since then I have gone to Old Man Emu single rate springs due to the constant load and they work beautifully, although irrelevant to this thread.

Plus... there s a pair one bay at the moment for £50... https://www.ebay.co.uk/itm/174838637959?ha...ition=3000 - make them an offer

The specs of the two springs are below

RKB101111
D110 heavy duty and D130 (VIN XZ159807 up)
Rear
16.10"
270/420 lb/"
8.8 coils
brown/purple

RKB500300
D110 station wagon (VIN XZ159807 up)
Rear
16.90"
240/280/360 lb/"
9 coils
green/green/white

26th Aug 2021 8:40am

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5846

Thanks both. I think from memory last time I (the 110 not me) weighed in at 2400kg and the trailer 500kg - which does lower the back end a little when hooked up.

LRA - cheers for the link
GeoBloke - also cheers for the link to the springs. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

26th Aug 2021 9:21am

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