Evo / XL / Twin Cam – Stage 1.5 Cylinder Heads

$985.95

Complete performance rebuild with upgraded valve sizing and CNC-machined chambers:

  • One of our most popular heads great choice for a mild hot rod 95-107”

  • Full disassembly and inspection of all components

  • Deep cleaning and media blasting of chambers and ports

  • Hand ported as well Pocket porting with corrected throat diameters for optimal flow balance

  • Precision 3-angle valve job

  • Bead-blast and resurface valve faces

  • Upgraded 1.900” intake / 1.610” exhaust stainless valves

  • CNC-machined combustion chambers for improved flow and consistency

  • CNC deck for perfect sealing and uniform chamber volume

  • Final ultrasonic wash and assembly with premium beehive valve springs

Result: increased airflow, better chamber efficiency, and stronger mid-range torque — a perfect step up for riders wanting more power without going full race.

Note: This is a send-in service for your existing cylinder head cores.

Customer must ship in clean, rebuildable head cores for this service.

Pricing is for machine work and labor only — no cores are supplied or exchanged.

Any additional parts or repairs required beyond the listed service will be quoted separately upon inspection.

Complete performance rebuild with upgraded valve sizing and CNC-machined chambers:

  • One of our most popular heads great choice for a mild hot rod 95-107”

  • Full disassembly and inspection of all components

  • Deep cleaning and media blasting of chambers and ports

  • Hand ported as well Pocket porting with corrected throat diameters for optimal flow balance

  • Precision 3-angle valve job

  • Bead-blast and resurface valve faces

  • Upgraded 1.900” intake / 1.610” exhaust stainless valves

  • CNC-machined combustion chambers for improved flow and consistency

  • CNC deck for perfect sealing and uniform chamber volume

  • Final ultrasonic wash and assembly with premium beehive valve springs

Result: increased airflow, better chamber efficiency, and stronger mid-range torque — a perfect step up for riders wanting more power without going full race.

Note: This is a send-in service for your existing cylinder head cores.

Customer must ship in clean, rebuildable head cores for this service.

Pricing is for machine work and labor only — no cores are supplied or exchanged.

Any additional parts or repairs required beyond the listed service will be quoted separately upon inspection.