I have just found 2 big weights either side off rear exhausts. What are they for and can they be removed

Are they some sort of counter weights due to the large engine up front? 2006 RRS SC Bonatti Grey (the 55th car/van I have owned)
2005 GSX 1400 K5

They are to reduce vibration  Current Volvo XC90 R Design T8
Gone 2010 TDV8. Stornoway Grey
Gone VW R50, AUDI S8, ML320 Sport, FFRR V8
Stolen 2007 TDV8.

i was just about to ask that very same question... having just noticed these weights whilst poking about at the back end
one of mine is awful close to the exhaust 2010 RRS, TDV8
bali Blue / colour coded
side steps / flappy paddles
black perforated leather
22" overfinch
heated everything, TV,fridge ...... now with gold calipers and mud flaps !( black mud flaps that is) !!
Many years ago,,,,, 1955 series 1 landie , sometimes wish I had kept it

They're harmonic mass dampers. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

supposed to stop vibrations and car sickness apparently?
Paul Current fleet
2011 Discovery 3.0 sdv6 XS
2008 Range rover sport HST tdv8*gone*
2000 Porsche 911 Carrera 2 convertible
1996 TVR Chimaera*gone*
2004 Vauxhall combo van*dead*
2003 ford ranger double cab

I've had mine removed. Some say they are there for a good reason, but vibration/sound dampening seams a bit of a silly idea, especially since mine were rubbing on the HST rear bumper ! Not noticed a single difference, except I don't hear the knocking noise anymore !  RR Sport Supercharged Vesuvius Orange 4.2 V8 First edition

Prefer RR Vouge S/C but they don't do Orange !

cheers b3eee i will remove them next week as they look like they weigh a fare bit

took both of mine off and i now get an extra 5mpg!  SVR 2018 in Santorini Black.

You want to see the size of the ones on the Fullfat, size of a bloody building block. If your gettin 5 mpg more, I'm bound to get more than that
Looks a bit of a "Friday night in the pub" design to me, it's described on parts list as sound suppressant yet referred to as vibration damper in other parts diagrams  2x TDV6. SE and HSE. Both returned to sender with issues👀
TDV8 Sport HSE...... Gone. Loved it but it didn't love me!!
Now rolling in MY10 Fullfat TDV8 Vogue. Slammed it to go round corners🙈
Cruising daily #56 mph in a Volvo V8. 😱
Lots of other toys in the cupboard...😜

5 mpg what else can we take off

How do they come off

IIRC, the rear of the body needs to be lifted, as they are one piece and go over each chassis rail

I'am surprised you have had the weights removed with no problems , Rover I would think would have researched the gains for having them fitted 2012 RRS. Orkney Grey

on a discovery 4 MY10, they have a nut that separate them in two, so, bumper off, loose the nut on the weights, loose the screw of the silent block, be careful with your feet (is a very heavy piece of iron!!) and you are done.

no need to raise the body. nut is in the upper.

I know because I had to change one with a bad silentblock that was knocking on corners