Big Bore Kits

Fuel MotoM8 128" Piston & MotorWitch Billet Cylinder Kit (114/117" Engines)

✓ Verified fit for your 2018 Fat Bob 114

About this part

128in Big Bore Kit combining Fuel Moto's own CP Carrillo piston design with CNC-machined billet cylinders from Motorwitch Industries, for Harley-Davidson M8 114in or 117in engines, no case boring required

Options that fit your bike

  • Base kit$2,999.95