What is the difference between the SPL ELC 996 and the combined SPL EL 996?

The ELC 996 locks the rear lower control arm camber eccentric only; it does not address the rear toe eccentric. The EL 996 combined kit locks both the rear camber eccentric and the rear toe eccentric in a single purchase. If only rear camber slip is the concern and the toe eccentric is performing correctly, the ELC 996 is the focused, lower-cost solution. If both eccentrics need locking, the EL 996 combined kit is the more efficient single purchase.

What adjustable camber arms work with the ELC 996 after the eccentric is eliminated?

Two options are available from SPL Parts. The LCA 996 V2 lower control arms provide camber adjustment at the lower arm connection, along with roll center and track width adjustment. The DB 996 rear dog bone upper arms provide camber adjustment at the upper arm connection. Both approaches retain full rear camber adjustability after the factory eccentric is removed; the choice depends on where in the suspension geometry the builder prefers to make the adjustment.

Why does the camber eccentric specifically slip on the 996 and 997 under track loads?

The factory eccentric bolt system relies on friction and clamping torque to hold the eccentric washer's rotational position. The forces generated by sustained cornering at track speeds, particularly with performance tires, create sustained lateral loading on the rear suspension that exceeds the friction threshold of the eccentric. The eccentric washer rotates a small amount, the arm connection angle changes, and rear camber moves away from its set value. On the street, this is rarely enough to cause a noticeable issue; on track, the drift accumulates and becomes detectable in handling behavior.

Does this kit require a full rear alignment after installation?

Yes. Removing the factory camber eccentric and installing the lockout plates fixes the arm at whatever angle the arm is in at the time of installation. A full rear alignment is required to confirm camber is at the desired target value before the lockout hardware is torqued down, using the adjustable camber arm to reach the correct setting.

Is this kit compatible with the 996 GT3 and 997 GT3?

The ELC 996 kit covers all 1999-2005 Porsche 996 and 2005-2012 Porsche 997 models. The 996 GT3 and 997 GT3 use the same rear lower control arm eccentric bolt position as the standard Carrera variants; this kit fits those models.

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Description

SPL Parts Rear Camber Eccentric Lockout Kit for 99x Porsche 911

Rear camber on the 996 and 997 is set by rotating an eccentric bolt at the rear lower control arm — the eccentric washer’s offset position determines the arm’s connection angle and therefore the camber reading at the alignment rack. The bolt is held in position by friction. On track, that friction faces sustained lateral loads that the factory system was not designed to resist indefinitely. When the eccentric rotates under load, camber drifts, handling shifts, and the car is no longer running the alignment that was set before the session. An eccentric lockout is the direct solution to that problem. The SPL ELC 996 eccentric lockout kit specifically addresses the camber eccentric at the rear lower control arm. CNC-machined 6061-T6 aluminum eccentric lockout plates replace the factory eccentric hardware at both rear corners, and class 10.9 metric bolts with lock nuts create mechanically fixed connections that cannot rotate under any cornering load the 996 or 997 will generate on track. With the eccentric lockout installed, rear camber holds its set value through the full session — no drift, no recurrence of the problem at the next event.

Features

Eccentric lockout plates eliminate the rear lower control arm camber eccentric; mechanically prevent camber position change under sustained cornering load
CNC-machined 6061-T6 aluminum eccentric lockout plates; precise dimensional fit to OEM camber eccentric position
Class 10.9 metric hardware; eccentric lockout cannot rotate under track cornering loads

Specifications

Material: 6061-T6 aluminum
Hardware: Class 10.9 metric
Replaces: OEM rear eccentric bolts
Required: Adjustable arms must be used to retain alignment range
Origin: Made in the USA

Applications

Porsche 911 Carrera: 996, 997 | 1999-2012
Porsche 911 Carrera 4: 996, 997 | 1999-2012
Porsche 911 Carrera 4S: 996, 997 | 2002-2012
Porsche 911 Carrera S: 997 | 2005-2012
Porsche 911 Targa: 996 | 2002-2005
Porsche 911 Targa 4: 997 | 2006-2012
Porsche 911 Targa 4S: 997 | 2006-2012
Porsche 911 Turbo: 996, 997 | 2001-2012
Porsche 911 Turbo S: 997 | 2010-2012
Porsche 911 GT2: 996, 997 | 2002-2012
Porsche 911 GT2 RS: 997 | 2010-2012
Porsche 911 GT3: 996, 997 | 1999-2012
Porsche 911 GT3 RS: 996, 997 | 2004-2012

Notes

SPL components are made-to-order in the USA; build time will be confirmed at the time of order

Frequently Asked Questions

What is the difference between the SPL ELC 996 eccentric lockout and the combined SPL EL 996? The ELC 996 eccentric lockout addresses the rear lower control arm camber eccentric only — it does not address the rear toe eccentric. The EL 996 combined kit provides eccentric lockout for both the rear camber eccentric and the rear toe eccentric in a single purchase. If only rear camber slip is the concern and the toe eccentric is performing correctly, the ELC 996 eccentric lockout is the focused, lower-cost solution. If both eccentrics need locking, the EL 996 combined eccentric lockout kit is the more efficient single purchase.
What adjustable camber arms work with the ELC 996 after the eccentric lockout eliminates the factory eccentric? Two options are available from SPL Parts. The LCA 996 V2 lower control arms provide camber adjustment at the lower arm connection, along with roll center and track width adjustment. The DB 996 rear dog bone upper arms provide camber adjustment at the upper arm connection. Both approaches retain full rear camber adjustability after the eccentric lockout removes the factory eccentric — the choice depends on where in the suspension geometry the builder prefers to make the adjustment.
Why does the camber eccentric specifically slip on the 996 and 997 under track loads, making an eccentric lockout necessary? The factory eccentric bolt system relies on friction and clamping torque to hold the eccentric washer’s rotational position. The forces generated by sustained cornering at track speeds — particularly with performance tires — create sustained lateral loading on the rear suspension that exceeds the friction threshold of the eccentric. The eccentric washer rotates a small amount, the arm connection angle changes, and rear camber moves away from its set value. On the street, this is rarely enough to cause a noticeable issue. On track, where the car is near the limit for extended periods, the drift accumulates and becomes detectable in handling behavior. An eccentric lockout eliminates that failure mode entirely.
Does installing the eccentric lockout kit require a full rear alignment? Yes. The eccentric lockout plates fix the arm at whatever angle it is in at the time of installation. A full rear alignment is required to confirm camber is at the desired target value before the eccentric lockout hardware is torqued down, using the adjustable camber arm to reach the correct setting first.
Is this eccentric lockout kit compatible with the 996 GT3 and 997 GT3? Yes. The ELC 996 eccentric lockout kit covers all 1999–2005 Porsche 996 and 2005–2012 Porsche 997 models. The 996 GT3 and 997 GT3 use the same rear lower control arm eccentric bolt position as the standard Carrera variants, making this eccentric lockout kit a confirmed fit for those models.

About SPL Parts

SPL Parts is a USA-based manufacturer of high-performance suspension components engineered for both professional racing and demanding street applications. Built on the core principles of strength, lightweight construction, low friction, and precision, SPL Parts products deliver the adjustability and alignment performance required by top race teams and discerning enthusiasts alike. Every component is produced using USA-sourced, certified materials and machined by experienced local shops to exacting tolerances. Professional TIG welders ensure maximum weld integrity, while each part is hand-fitted and treated with anti-seize and 3M internal panel coating for lasting protection. SPL Parts conducts all research and development in-house, allowing the team to leverage firsthand product knowledge and deliver unmatched customer support. Their suspension components feature innovative adjuster designs for quicker, more precise alignments, and utilize spherical bearings with Teflon liners that are self-cleaning, self-lubricating, and built for long service life. From concept to assembly, SPL Parts is made with pride in the USA by skilled machinists and welders who are committed to quality, innovation, and performance.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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SPL Parts Rear Camber Eccentric Lockout Kit for 99x Porsche 911 [SPLELC996]

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SPL Parts Rear Camber Eccentric Lockout Kit for 99x Porsche 911

Features

Specifications

Applications

Notes

Frequently Asked Questions

About SPL Parts

Reviews