Be proud of what you put on your bike. At Thrashin Supply Co. they strive to build the best parts, without cutting corners, right here in the United States of America. The Thrashin Supply Risers are made of domestic 6061 aluminum and paired with ARP hardware. Their black finish is a hard anodized black with a anti-fade agent while the chrome finish is triple nickel plated (known as triple chrome) to withstand severe weather conditions, so the risers stay looking fresh for years to come. All of Thrashin's top clamps are angled at 35 degrees whether your choose a pull back or straight riser. This gives their risers a stylish look and feel as well as making the new M8 gauges read perfectly for the rider at any height. Fits on all models with 3.5" center on center riser spacing most O.E. Harley-Davidsons. Works with any standard 1" handlebar. Top upper clamp bolts are 4.25" center on center.