SPL Parts 06-15 Mazda Miata (NC) Eccentric Lockout Kit 2013-nissan-370z-esi7433722 4L Turbo engine choking for

4L Turbo engine choking for air and in need of some additional horsepower

The direct-fit rear upper control arm adds strength

6L Duramax (LB7/LLY/LBZ) solves all these problems

A true hassle-free installation with no cutting required

We also offer a more Borla(r) traditional system based on the Cobra R system (PN 14858) that is less aggressive but with identical performance gains

SPL Parts 06-15 Mazda Miata (NC) Eccentric Lockout Kit 2013-nissan-370z-esi7433722 4L Turbo engine choking forThe stock eccentric bolts provided by Mazda for small camber and toe adjustments tend to slip under high cornering loads, causing changes to the rear alignment. Our SPL Parts NC Miata Eccentric Lockout (EL) kit eliminate the stock eccentric bolts to keep your rear alignment where you set it. You must have adjustable control arms in order to adjust camber and toe after eliminating the stock eccentric bolts. Our lockout plates are CNC machined from 6061