Click on each carb for more information.
| Dash-1 | 5/8" venturi entrance radius. |
| Dash-2 | 1" venturi entrance radius, 1/2" raised air cleaner, 10-12% more air. Standard on Ultimate 4150, split 4500. |
| Dash-3 | 1" venturi entrance radius, stock air cleaner height. |
| Blow-through | Sealed shafts. Add $100 to price. |
| Methanol | Jetted for methanol. |
