4413900/4413900
KB Pistons Performance Piston Set 4.135" Bore +0.10" Up to 120" Harley M8 17-Up
- Brand Mid USA
- Model 4413900
- Availability In Stock
- These kits convert 2017/Later Milwaukee-Eight model 114" or 117" to 120" by boring stock cylinders
- Large valve pocket
- Premium Hastings ring sets
- "Line 2 Line" coating allows for perfect wall clearance
- Kits include pistons, rings, pins, and locks
KB Pistons
Heavy Duty Piston Kits for Milwaukee-Eight
+.010" Bore