KPower K Series Engine to BMW ZF 5-Speed Transmission Conversion Package for 1990-2005 Mazda Miata (NA NB)

This package adapts a BMW ZF 5 speed transmission to a K series powered Miata. It's designed to work with all existing KMiata swap kit components and gives K series users a very stout transmission option to handle huge power.  If you are interested in some additional KPower options, we offer a longer 5-speed transmission with our E30 Getrag 260 transmission package. We also offer our K or BP to BMW ZF 6 transmission option. New for 2025: Our new 3.5" aluminum driveshaft features larger diameter splines machined to ultra-tight tolerances, eliminating the slop sometimes found in older steel shafts with smaller splines. This design ensures consistent smooth power delivery, improved durability, and vibration-free operation even at high speeds, having been thoroughly tested to 150+ mph on the racetrack. All parts included are proudly made in the USA. Lead times for shipment vary, always reference our Current Lead Times page for up to date timeline for order fulfillment. This package include