Ace Low Classics are tried and true are a full 5/32" (4mm) lower than our Classic models. Not recommended for use with taller than 53mm wheels. These lower your center of gravity for added stability at the cost of a slightly reduced turning radius. To quickly tell them apart from our Classics we use all black hardware. Industry-first features such as oversized axles and beveled hanger ends, both for better bearing performance. Made using industry-standard 7071 alloy and 3056 steel axles, you can trust our Low Classics to perform in the clutch.