This GFBDevelopments exclusive harness is for owners wanting to run Honda K20 coil packs on their MX5/Miata.

Offer superior performance to the stock coil pack and a BHP ceiling above the traditional Denso kit, this harness coupled with coils will allow you to run increased boost.

Please note this is for the HARNESS only! No Coils are suppled in this version.

If you require the mounting plate and/or the coils please see our other listing when avaliable.

Harness comes complete with instructions manual.