top of page

K-Series Dragspec Race Head-Kfks440

About Kfks440:

R&D Start since 2016. First manufacturing since 2019.

Our Kfks440 head is not produced by reverse engineering, so it is not simply a large port head. if you attention to the intake and exhaust ports, it is clear that it has nothing to do with the original k-series head. The K-series oem head when designing fabrication it was designed to be used in many areas because this vehicle was suitable for daily drive use to.


What improvements we made to our head.

-Friction port surface below 1 percent we get with special cnc cutting.

-High port slope angle.

-Port injector channel special designed to improve air and fuel mixture.

a-Improved oil channels (at 900 rpm plus 0.3 psi )

-Improved oil recycling channels.

-Different valve angles designed to prevent at high lift valve to valve hit problem.




  • CNC Ported/Machined finish port

  • 6068 Rolled type t6 head material

  • Formula technology port design

  • Hand blended finish work (your choice)

  • 50,5-49-48 cc Comp. Chamber choices

  • Intake over 450cfm

  • Exhaust over 343cfm 

  • 4-angle Valve job

  • Heads are ultra Sonic cleaned prior to assembly

  • Machined PPR logo

  • 38mm Nimonic Intake Valves 

  • +1.5mm Nimonic Exhaust Valves 

  • Forged Bronze alloy intake Valve seats

  • Forged Beryllium alloy exhaust valve seats

  • Bronze alloy guides

  • Performance Valve Springs 110lbs

  • Long life tool steel or titanium retainer

  • Hardened Steel Spring Platforms

Recommended to use;

  • Drag race setup.


Total Price:5.990 usd 

Without Everything Core Billet Head Price:4.990usd

Extra your choices;

  • C.chamber cnc porting and hand finish:Plus+ 650 usd

  • Titanium c. valves:Plus+ 600 usd

  • Titanium valves:Plus+ 1500 usd

  • Valves size selection:Free

For order and questions:

flow test
k series billet head
billet head
5 axis
kseries billet head
k26 billet block
K27 Race head
Flow test k20
bottom of page