For curved or radius pipes we have both our QQ and Original Thunder Monster baffles. For the Vance & Hines Big Radius 2 into 2 on a Harley Davidson the part number for the Original Thunder Monster baffles is 2002 and for the QQ Series part number QBL 1845. Part numbers 2001 and QBL 1994 will NOT fit. For Metric applications the part number for the Big Radius 2 into 2 is 2000 or QBL 2125.
Cobra Swept take our part number 2001 or QBL 1994 except for Suzuki applications.
Please call for other applications as pipe sizes will vary and we will need to know the inside and outside diameter of the pipe at the exit end.