MagnaFlow Y-pipe transitions are designed for single-pipe exhaust systems that have dual inlet pipes. MagnaFlow's stainless steel stamped Y-pipes represent a significant leap forward in technology over traditional pipes. The gentler radius allows for better exhaust gas scavenging, noise cancellation, and balance between cylinder banks. The result is a significant increase in power and torque with the use of these MagnaFlow stamped Y-pipes.Material: 100% Stainless SteelInlet/Oulet Size: 2.25in. Dual/2.5in. SingleOverall Length: 10in.