
The SPL Parts Rear Eccentric Lockout Kit (Part #SPL EL Z34) is designed to permanently eliminate rear alignment slip caused by factory eccentric bolts on the Nissan 370Z and Infiniti G35/G37 platforms. Under high cornering loads, OEM eccentrics can rotate, resulting in unwanted camber and toe changes that negatively affect handling and tire wear. This lockout kit removes that failure point and keeps your rear alignment exactly where it’s set.
CNC-machined billet aluminum lockout plates combined with high-strength grade 10.9 hardware provide a true zero-slip solution for aggressive street driving, track days, and competitive use. Adjustable rear control arms are required to set camber and toe once the factory eccentrics are eliminated.