Hi,

I have Bilstein coilover on my S2000, it was already on when I bought the vehicle. I would like to try to adjust the ride height but I do not have the coilover key to turn the rings. The bottom ring is smaller than the top one.
I have checked the documents of the kit, but it does not mention anything about adjusting the ride height and which tool is required. I can only find the number of the product: E4-WM5-Y223A00.

I was wondering if anybody knows which size coilover key I should use?
Are they common sizes? Or does it differ a lot per brand or does it even depend on coilover models within the brand?
I have seen two coilover keys for sale in the local car shop: one is 45-75 mm and the other 75-110 mm.

Thanks in advance.