JDM STI damper kit (with questions)
 

I am replacing the original suspension on my '13 BRZ and ordered this kit from Japanparts. There wasn't a lot of info, so I wanted to share.

Question: No top nuts for the strut shafts were provided. Do I reuse the stock nuts? For the rear, do I reuse the bump stops and boots?

Kit: STI
DAMPER KIT (ST20310AS040 + ST20310AS050 + ST20365AS020x2 + ST20330AS010x2 + ST20380AS020x2)
(Japanparts No : 484-050-001)

Strut F RH: ST20310AS040 x 1
Strut F LH: ST20310AS050 x 1
Shock Absorber R: ST20365AS020 x 2
Coil Spring F: ST20330AS010 x 2
Coil Spring R: ST20380AS020 x 2

Delivery took less than two weeks from Japanparts. Here's what I received:

http://www.canyonero.com/files/1716810529.jpg
http://www.canyonero.com/files/1716810551.jpg
http://www.canyonero.com/files/1716810572.jpg
http://www.canyonero.com/files/1716810591.jpg

Front Struts
http://www.canyonero.com/files/1716810678.jpg
http://www.canyonero.com/files/1716810697.jpg
http://www.canyonero.com/files/1716810709.jpg
http://www.canyonero.com/files/1716810724.jpg

Front Springs
http://www.canyonero.com/files/1716810753.jpg
http://www.canyonero.com/files/1716810767.jpg
http://www.canyonero.com/files/1716810781.jpg
http://www.canyonero.com/files/1716810799.jpg

Rear Struts
http://www.canyonero.com/files/1716810835.jpg
http://www.canyonero.com/files/1716810852.jpg
http://www.canyonero.com/files/1716810864.jpg
http://www.canyonero.com/files/1716810880.jpg

Rear Springs
http://www.canyonero.com/files/1716810910.jpg
http://www.canyonero.com/files/1716810928.jpg
http://www.canyonero.com/files/1716810939.jpg
http://www.canyonero.com/files/1716810952.jpg

Question: No top nuts for the strut shafts were provided. Do I reuse the stock nuts? For the rear, do I reuse the bump stops and boots?

Yes, you can reuse the top hats and stock nuts from the stock suspension. You're just switching out both the struts and springs. Make sure to use a spring compression tool to compress those springs during removal.

You can get new top hats and if you don't want to break your wallet, I suggest Pedders Front Top Hats since there isn't much aftermarket for the rears. Otherwise, keep the OEM parts.

https://www.ftspeed.com/products/580...nt-strut-mount

If the front strut is inverted like Bilstein B6s the hump stop is Likely internal. No need to do anything on the front.

Rears you would reuse OEM assuming the springs are stock height.

Thank you for the info. A shop will be doing the install. I have a new set of Pedders mounts ready to go, along with a new set of rear OEM mounts, and new front and rear stabilizer bar end links.