From the new and amazing Hellcat down to the powerful 5.7L Hemi, ARH has a system to suit your needs. Available as a long system in 1-3/4", 1-7/8", and 2". Let ARH quality and performance make the difference. Attn. All ARH products are exclusively manufactured for racing purposes. Installing these products on any vehicle eliminates the legal use, in any capacity, on public roads/highways and may be subject to fines and/or criminal liability as per the Clean Air Act.