CHROME BREATHER BOLTS | Dyna | FXR | Softail | Sportster | Touring

Fits Evolution Sportster 1991-2022, and Evolution Big Twin 1992-2000, 1/2"-13 UNC, set of 2. Replaces OEM 3577

For those who want to customize their Through-The-Head breathing crank vent system we offer these chrome hex head breather bolts. Sold in sets of 2.