Big Bore Kits

Fuel MotoM8 132" Big Bore Kit (114/117" Engines)

✓ Verified fit for your 2024 Road King Special 114

About this part

132in Big Bore Piston & Cylinder Kit for Harley-Davidson Milwaukee-8 114in or 117in 4.5in-stroke engines - the largest displacement available for the M8 engine without case boring

Options that fit your bike

  • Base kit$1,499.95