| Flathead |
Best
|
Secondary
|
Alternate
|
|
Engine |
|
|
--
|
|
Transmission |
|
|
--
|
|
Knucklehead |
Best
|
Secondary
|
Alternate
|
|
Engine |
|
|
--
|
|
Transmission |
|
|
--
|
| Panhead |
Best
|
Secondary
|
Alternate
|
|
Engine |
|
|
--
|
|
Transmission |
|
|
--
|
|
Shovelhead |
Best
|
Secondary
|
Alternate
|
|
Engine |
|
|
--
|
|
Transmission |
|
|
--
|
| Evolution
1340 - Twin Cam - Revolution |
Best
|
Secondary
|
Alternate
|
|
Engine |
|
--
|
--
|
|
Transmission |
|
|
|
|
Primary Chain Case |
|
|
--
|
| Ironhead
- Evolution Sportsters / V-Rods |
Best
|
Secondary
|
Alternate
|
|
Engine, Transmission / Chain Case |
|
--
|
--
|
|
|