SKU: SPL EL NC
SPL Parts 06-15 Mazda Miata (NC) Eccentric Lockout Kit
The SPL Parts Eccentric Lockout Kit replaces stock eccentric bolts that slip under high cornering loads and cause rear alignment changes. This kit locks camber and toe settings for consistent handling on 2006-2015 Mazda Miata MX-5 NC and 2004-2011 Mazda RX-8. Pair with adjustable control arms for precise adjustments and no movement during aggressive driving.
Key Features
- Zero-Slip Lockout Plates: Eliminate stock eccentric bolts to hold exact rear alignment under extreme cornering forces
- CNC Machined Construction: Cut from 6061-T6 aluminum for lightweight strength and exact fitment
- High-Strength Hardware: Zinc-plated grade 10.9 bolts and lock nuts provide unbreakable clamping force
- Complete Coverage: One kit equips both camber and toe arms for left and right sides on one vehicle
- USA Made: Manufactured in the United States with full quality control
Product Notes
- Requires adjustable rear control arms to set camber and toe after installation
- Kit includes parts for left and right sides on one complete vehicle
- Direct replacement for SPL adjustable arms and compatible aftermarket options
Installation Notes
- Professional installation recommended.
- Install only after fitting adjustable control arms
- Secure with included grade 10.9 bolts and lock nuts for maximum clamping force
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2015 | Mazda | MX-5 Miata | Sport |
| 2007-2009 | Mazda | MX-5 Miata | SV |
| 2006-2012 | Mazda | MX-5 Miata | Touring |
| 2008 | Mazda | RX-8 | 40th Anniversary Edition |
| 2004-2007 | Mazda | RX-8 | Base |
| 2008-2011 | Mazda | RX-8 | Grand Touring |
| 2009-2011 | Mazda | RX-8 | R3 |
| 2005 | Mazda | RX-8 | Shinka |
| 2008-2011 | Mazda | RX-8 | Sport |
| 2008-2009 | Mazda | RX-8 | Touring |
| 2015 | Mazda | MX-5 Miata | 25th Anniversary Edition |
| 2006 | Mazda | MX-5 Miata | Base |
| 2013-2015 | Mazda | MX-5 Miata | Club |
| 2006 | Mazda | MX-5 Miata | Club Spec |
| 2006-2015 | Mazda | MX-5 Miata | Grand Touring |
| 2011-2012 | Mazda | MX-5 Miata | Special Edition |
Why Choose SPL Parts?
- Specializes in high-performance suspension for Mazda track enthusiasts
- Uses premium materials built to withstand racing demands
- Delivers exact engineering for bolt-on reliability and performance gains
Frequently Asked Questions
-
Q: Does this kit require adjustable control arms?
A: Yes, adjustable rear control arms are necessary to make camber and toe adjustments after removing stock eccentric bolts. -
Q: What materials are used in the lockout plates and hardware?
A: Plates are CNC machined from 6061-T6 aluminum with zinc-plated grade 10.9 steel bolts and lock nuts. -
Q: What is the warranty on this product?
A: SPL Parts offers a limited lifetime warranty against manufacturing defects when installed and used properly.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Compact protective box 8 x 6 x 2 inches
- Weight: 0.7 lbs
Hardware
Engine hardware, fasteners, and mounting hardware kits for builds, fabrication, and suspension work are stocked at Black Ops Auto Works. Shop ARP engine bolts and stud kits, suspension mounting hardware from Fox and Rock Krawler, bumper mount kits, tie rod clamps, joint retainer tools, and single and kit-packaged hardware for domestic, import, and off-road platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 945 Hardware SKUs across engine hardware, suspension mounting hardware, and single-piece or kit-packaged fasteners. What This Collection Covers Hardware groups together the fasteners, mounting kits, clamps, and small components that hold engines, suspension systems, and accessories together. This includes ARP engine hardware such as intake manifold bolts and cam bolt kits, suspension mounting hardware from Fox and Rock Krawler for shock and steering stabilizer installs...
View Hardware Products
Hardware Kits - Other
Hardware kits and fastener assortments for engine builds, suspension installs, body and trim jobs, and off road rigs are stocked at Black Ops Auto Works. Shop ARP bolt and stud kits, brake caliper hardware, suspension bushing hardware, leaf spring hardware kits, security fastener kits, and general clip and retainer assortments across domestic and import platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 593 Hardware Kits - Other SKUs across engine, suspension, body, and lighting hardware categories. What This Category Covers The Hardware Kits - Other category groups together fastener kits and hardware assortments that do not fall under a single dedicated part category. Coverage spans engine fastener kits like cam bolts and intake manifold bolts, suspension hardware including bushing pivot washers and leaf spring hardware, seat belt mounting hardware, security hardware fo...
View Hardware Kits - Other Products
SPL Parts
SPL Parts titanium and chromoly suspension components for 350Z, 370Z, GT-R, S13, S14, S15, WRX STI, EVO, BMW M3, Supra, BRZ and track builds are stocked at Black Ops Auto Works. Shop adjustable toe arms, tension rods, control arms, tie rods, camber arms, end links, bushings and alignment lockout kits. Every SPL Parts product is filterable by year, make, model, trim, suspension layout and axle position so the correct part ships the first time. Black Ops Auto Works carries 190 SPL Parts SKUs across adjustable arms, steering links, bearings, bushings and alignment hardware. What This SPL Parts Collection Covers SPL Parts develops competition-focused suspension links and alignment components for import platforms, sports cars and track vehicles. Precision adjusters, high-strength materials and spherical bearings support repeatable geometry settings under load. Adjustable arms and links Toe arms, camber arms, traction arms, tension rods and control arms allow a qualified alignment sho...
View SPL Parts Products


