Parts & Accessories Spare parts For sale: Set of GM cups from the 90s. Standard 6-lug, rare. Very rare and new, extremely clean, original GM. Two pieces have very minor, almost unnoticeable flaws (shown in pictures). Price is by offer on public only. Serious buyers who know the value of rare items only. Search terms: cups, accessories, rare, GM, Chevrolet, 80s, hubcaps