Cylinder Head Customization for Motorcycle Performance Optimization

Competition CNC Kawasaki Products

ZX-14 Stage 4
CNC Ported Head and Cams $4,680

Stage 4 CNC ported
29mm buckets installed
CNC clearance for large cams
Bronze oversize valve seats
Bronze valve guides
Stainless steel valves +2mm
Valve Job
Valve bowls hand blended
Manifolds hand blended
Valve seals (High Temp Viton)
65# valve springs
Titanium spring retainers
Steel spring bases
Stage 4 cams
Valve lash set (ready to bolt on)


  • Must use adjustable cam gears and degree cams for safe piston to valve clearance.
  • Must use custom pistons for larger valves.
  • 17 to 1 or higher compression ratio recommended.
  • 48mm bored throttle bodies are required.
  • 50mm throttle bodies are recommended.
  • Larger Bosch EV-14 550cc/min injectors required.
  • Fuel re-mapping is required.
  • Custom Exhaust Header Required. 1-7/8"


  • 50mm throttle bodies $ please call
  • Cam gears $65
  • Head gasket $85
  • Cam Chain $75
  • Pistons $795
Kawasaki ZX-14 CAMS Kawasaki ZX-14 STAGE 2 BOTTOM Kawasaki ZX-14 STAGE 2 TOP Kawasaki ZX-14 STAGE 3 Kawasaki ZX-14 CAM CAPS Kawasaki ZX-14 inside port Kawasaki ZX-14 chamber 1 Kawasaki ZX-14 stage 4 head
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