Be proud of what you put on your bike. Thrashin Supply Company strives to build the best parts, without cutting corners, right here in the United States of America. Thrashin Supply Company Risers are made of Domestic 6061 aluminum and paired with ARP hardware. The black finish is a hard anodized black with an anti-fade agent added while the chrome finish is triple nickel plated (known as triple chrome) to withstand severe weather conditions, so your risers stay looking fresh for years to come. Top clamps are angled at 35 degrees whether you choose a pull back or straight riser.