Center to center mounting holes: 3

94-97 1100 California

- Allows +/-20 degrees of timing adjustment

- Assembled with OEM-specific throttle tube

rinehart 4 5 fat bob slip on mufflers for harley BS90 Center to center mounting holes:Rinehart 4. 5" Slip On Mufflers Black for Harley Davidson Fat Bob Unleash the full potential of your Softail Fat Bob with Rinehart's 4 1 2" Slip On Mufflers, a perfect fusion of aggressive style and sound. Specifically crafted to enhance the unique characteristics of the Fat Bob, these mufflers feature a striking black finish and a larger 4 1 2" diameter that promises not only a bold look but also a sound that captivates any Harley enthusiast.