Vance & Hines 21899 - Fits the following Vance and Hines mufflers:

Python Mamba Muffler Model Number:

41735, 41737, 41739, 41743, 41745

Vance & Hines Twin Slash Muffler Model Number:

16835, 16837, 16839, 16841, 16843, 16845, 18623, 46835, 46837, 46839

46841, 46843, 46845, 48623

Vance & Hines Straightshots Series Muffler Model Number:

16823