Big Gun BIG Cores Motorcycle Mufflers - 31-RC5

Some older model mufflers had different core diameters and both ends need to be measured to ensure you need 1-7/8 inch diameters on both the inlet and end tip side

Compatible with various current-style EVO and ECO Series mufflers that have a 15 inch overall muffler body length (not including the end tip)

Big Gun replacement Race Core is compatible with current-style EVO or ECO Series mufflers.

1-7/8 in. straight-through diameter

304 stainless steel perforated core

Big Gun 15in x 1in 7/8in Race Core

13-1/4 in. total length