MiataSource Library

5-Speed vs 6-Speed NA/NB Miata Transmission

Posted by Zachary Visker on

5-Speed vs 6-Speed NA/NB Miata Transmission

Do I need a 6-speed? How much power can a 5-speed hold? I want a 6-speed because of the overdrive.  One of the more common questions/concerns we have had during our used parts sales. Here we are going to lay out the details of a 6-speed NB transmission the pros/cons of the transmission and what to expect when installing one.  Gear Ratios The major difference between the 5 and 6 is an extra gear. Commonly assumed as the 6th being an overdrive over the 5, which is wrong. One of the more surprising facts about a 6 is the gear...

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