The Magnecor blue 8mm ignition leads are some of the best quality ignition leads available. Suitable for both OEM replacement or a performance build.
While there are larger 8.5mm options on the market, they are simply overkill and not necessary for most applications.
The advice given by Magnecor is that the Electrosport 80's are the ideal lead for the MX-5. Read information from Magnecor themselves at: HERE
FITMENT: Suits all cars with 4 ignition leads. Will not fit later NB's with only 2 ignition leads.