Ball Stud.

Ball Stud at RC Shopper: 58 products listed, shipped from the UK. Prices run from £4.49 to £39.99. Stock comes from Yokomo, Reve D, MST and 4 other brands. There are parts here for BD8, but check the listing for the revision you run. What is in stock is on the shelf, not on order from a distributor. Check the part number against your own car before ordering; a lot of these parts fit one chassis revision and not the next.