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4 Piston Racing K Series PRO 163 CNC Cylinder Head

4 Piston
Available For Order


4 Piston Racing K Series PRO 163 CNC Cylinder Head
Ferrea Valve Guides with Install / No Springs and Retainers - $2,050.00

Honda K20/K24 (CRV K24A1, Type S K20A2, Type R K20A)

Note: does not fit in RBC, RSP, or RBB TSX castings. See Pro RBC for big valve alternative.


  • CNC Ported intake and exhaust ports
  • OEM Guides left in for porting
  • Oversized Intake Seats (8)
  • Racing Valve Job
  • Resurface
  • Valves Included!!

Recommended Use

  • Pro All Motor, All Motor Street
  • USAC Midget
  • High HP open class Road Race
  • 2.4L+ Displacement Engines with the intent to achieve 350-450 DynoJet horsepower.
  • E85, Methanol, Gasoline
  • Not recommended for high boost applications, but some turbo cars run them with HUGE success.
  • If you are competitively racing and you are running one of our competitor's heads, make the switch and let the results do the talking

Features & Benefits

  • Slow-cut precision 5-axis cnc porting, second to none on machining quality.
  • Utilizes a 4 Piston 50 degree 37mm valve which flows better and weighs 7 grams less per valve than other 37s on the market.
  • Full length bronze manganese guide for valve stability.
  • Our intake port has very little turbulence and great velocity when compared to our competitors. You can hear the difference on the bench!
  • Unique power producing exhaust port design.
  • Need to port match to your Kinsler induction? Simple...just tell Kinsler you have a 4 Piston 163 and they will CNC match your induction to this port entry.
  • Our heads are all shipped with installation tips, a sheet of desired clearances for setting up your engine, and a flow chart from your head.

All heads require a core! You can send us your head, or purchase one from us at the current market price.

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