Command Zoomies Size:1-1/4" When choosing the 270 Duration

When choosing the 270 Duration Cam make sure to change the lift to

Select your size 6" or 8" rims and options of bearing or bushing

To see the gear ratio chart please click the link below

this is the easiest way to get it done

the HD disk has 4 disks on each side is about a half inch larger around and the SHD disk has 5 disks on each side and is another 1/2 inch larger around

Command Zoomies Size:1-1/4" When choosing the 270 DurationKohler Command Zoomie headers for 18 30hp engines. Available in 3 sizes. Choose between completed Zoomie headers with the flanges welded on, or Do it Yourself which has pipes and flanges, or pipes only. The pipes only are price each not pairs. All available in 1 1 8 or 1 1 4 or 1 3 8 Outside diameter (OD) pipes