Original K Series Miata Conversion Kit


$ 3,895.00
Original K Series Miata Conversion Kit

Please note that due to high demand, we are currently experiencing an approximate 45-60 day lead time on this swap package. All orders are shipped on a first come, first serve basis. We appreciate your patience!

Interested in one big package with all the extras included? Check our our new Ultimate K24 Miata Swap Package.

Our K series conversion kit give you the ultimate Miata engine swap package with no compromises in performance. Specifically, our kit:

  • Retains OEM Miata steering geometry
  • Retains factory Miata ground clearance
  • Drops weight from the front of the vehicle
  • Can handle all the road racing abuse you can give it


This kit provides you with all key components to bolt a K20 or K24 into your 1990-2005 Miata.  All products are proudly made in the USA.  

This conversion kit includes all of the following items:

-Engine/transmission adapter plate, built of 1/2" zinc-plated steel

-Aluminum flywheel that accepts all Miata 1.8 clutch kits (13.5 lbs.)

-Tubular steel subframe, powdercoated

-Steel engine mounts, powdercoated, with 62A bushings

-Baffled aluminum oil pan

-Type S oil pump adapter and pickup tube

-Hondata Kpro compatible wiring conversion harness with built in relays and OBD2 port



Download installation instructions here


 Doing a K24 swap in an NA? The K20 clears the stock hood, but a K24 is about a half inch too tall. If you don't want to cut your hood, we recommend our modified K24 valve cover. All NB hoods clear both the K20 and K24 without issue.

Note: The engine mounts included in this kit are performance-oriented and designed to limit engine movement. The additional stiffness may result in a slight increase in NVH (noise, vibration, harshness), but can withstand years of hard driving as a result.

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