Megan Racing Down-pipes for Nissan R35 GTR are made of durable 100% T-304 Stainless Steel piping that is polished to a mirror-like finish. This Down-pipe replaces the OEM exhaust piping with all of its restrictive bends while increasing the inner diameter of pipe; this greatly increases exhaust flow and reduces turbulence within the system, as a result freeing up high-end horsepower and mid-range torque. Essentially the missing link to your exhaust system; this down-pipe will give you competitive edge that you have been looking for. Expect an increase in exhaust tone due to freed up exhaust flow. (NOTE: The down-pipe is for off-road use only and is not intended for public highway use.) Specifications & Features: - Fit Nissan GTR R35 09-14 - 100% T-304 Stainless Steel Piping TIG-welded onto computerized CNC-machined flanges for strong, long-lasting durability - 3" Exterior Piping (OD) - 2.88" Inner Diameter with Bell mouths - Smooth bends improve flow and performance. (Note: Off-Road Use Only)