As title says.. aftermarket places say they are all compatible, but are all the rear oem control arms all the same size top and bottom?

 

People go with the R53 to R56 conversion kit. Same on the R52.

Used to be the R53 to R53 GP conversion as those were the first to have the lighter trailing arms in aluminum

Here are the part OEM Part Numbers

Parts included:
1 Trailing Arm - Aluminum Left 33326765377 https://www.ecstuning.com/Search/Sit...h/33326765377/
1 Trailing Arm - Aluminum Right 33326765378 https://www.ecstuning.com/Search/Sit...h/33326765378/
2 Self tapping Screw M14x1.5x101 33326770089 https://www.ecstuning.com/Search/Sit...h/33326770089/
2 Bushing Stopper 33316761779 https://www.ecstuning.com/Search/Sit...h/33316761779/
1 Bushing Bracket Left 33306772665 https://www.ecstuning.com/Search/Sit...h/33306772665/
1 Bushing Bracket Right 33306772666 https://www.ecstuning.com/Search/Sit...h/33306772666/
2 Hex Bolt with Washer M12x1.5x83-10.9 33306768048 https://www.ecstuning.com/Search/Sit...h/33306768048/
2 Self Locking Collar Nut M12x1.5-10ZNS3 33326760374 https://www.ecstuning.com/Search/Sit...h/33326760374/
2 Hex Bolt with Washer M12x1.5x100 33306772658 https://www.ecstuning.com/Search/Sit...h/33306772658/
2 Adjusting Plate 33326767869 https://www.ecstuning.com/Search/Sit...h/33326767869/
2 Cage Nut M12x1.5-10ZNS3 33306770138 https://www.ecstuning.com/Search/Sit...h/33306770138/
8 Hex Bolt with Washer M10x75-10.9 33506771928 https://www.ecstuning.com/Search/Sit...h/33506771928/
2 Rotational Speed Sensor Rear axle 34526773020 https://www.ecstuning.com/Search/Sit...h/34526851501/

Just pop those 11 digit part numbers in our site search box and build your cart. Some people get some of the parts used, just watch if its from a wrecked car as things might not be straight.

 

The arms are the same sizes top and bottom, and are compatible with either platform.

The early control arms that were two piece welded steel had a slight tendency to crack, so I would recommend the later arms (rectangular).

 

Is there a go to list or another thread that better explains what to get from the junk yard? My local pull & pay has a near complete 2010 Mini Cooper. I just need to know what parts I need to remove from the donor vehicle. The parts on going on a 2005 Mini Cooper convertible with the JCW package.

 

You have to take EVERYTHING including the bolts, wheel speed sensors.

But you will need our spacers to mount them up to the R53 shocks
https://www.waymotorworks.com/wmw-re...k-spacers.html

 

But not if you end up using R53 GP1 rear shocks, correct?