• Valve jobs with our custom cutters designed for matching the shape of the combustion chamber and increasing flow
  • Machining and Installing compression releases
  • Surfacing cylinder heads
  • Porting and polishing
  • Installing and sizing guides
  • All modifications related to high lift cams
  • Oversized valves and seats
  • We use all Kibblewhite Harley Davidson spring kits and Black Diamond Valves

We don't just do automotive and general machine work. We specialize in Harley-Davidson motorcycles. 

Gerolamy is a name well known in the Harley Davidson and motorcycle circles as the highest quality machine work in the business.

We make the power you need! 

  • Boring
  • Honing with Torque Plate
  • Surfacing barrels
  •  Balancing wheels and assemblies to fit your application