There is simply nothing currently offered as a package that provides the incredible HP, torque and sound as an ARH full system for your 4.0L V8 BMW M3. The Long System is a direct bolt-in to your existing Axleback. Available with 1-5/8" or 1-3/4" primaries. If you are looking for a louder sound, consider our "resonator delete" option.

Want to go all in and upgrade your complete exhaust system from beginning to end? Check out our BMW M3 Full system here.

Product features on this system includes:

• 100% Made in the USA - Never Outsourced
• Made entirely of 304 stainless steel
• 3/8" thick laser-cut flanges for a warp-free seal
• Hand-ported TIG welded inlets
• Optimized primary tube routing for superior fit and performance
• Merge collectors with scavenger spikes
• Catted systems feature 200 cell metallic substrate catalytic converters for extreme durability

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.