77-84 FX Shovel, 77-84 FL Shovel, 85-94 FX Model, 91-98 Dyna, 84-99 Softail, 85-98 Touring
Note: Except E77 Models
1215 steel material holds up better than the stock plastic gears, and are less likely to damage the case. Improves breathing capacity. Outperforms the stock plastic unit and is a must for any performance engine.