How does the EL 996 combined kit differ from the ELC 996 and ELT 996 standalone kits?

The EL 996 covers both the rear camber arm eccentric and the rear toe arm eccentric in one kit. The ELC 996 covers only the camber arm eccentric. The ELT 996 covers only the toe arm eccentric. For any build that will track the car and wants both positions permanently locked, the combined EL 996 is the more practical and cost-effective single purchase.

What specifically causes the Porsche eccentric to slip on track and not during street driving?

On the street, lateral forces are lower, more intermittent, and applied for shorter durations. The friction holding the eccentric in position is sufficient for these load levels. On track, the car sustains consistently higher lateral acceleration through corners, particularly with sticky performance tires. That sustained high load overcomes the eccentric's clamping friction over multiple laps. The eccentric then rotates a small amount; enough to change the alignment by a detectable margin without the driver necessarily noticing during the session.

What adjustable arm combinations work with the EL 996 lockout kit?

For adjustable rear camber after the lockout is installed, SPL produces two options: the LCA 996 V2 lower control arms, which also provide track width and roll center adjustment, and the DB 996 rear dog bone upper arms, which provide adjustable camber from the upper arm position. For adjustable rear toe, the SPL RTA 996 is the toe arm for the 996 and 997 platform. Both camber and toe adjustable arms must be installed before the lockout is fitted, as the lockout eliminates the factory adjustment mechanism.

Will the rear alignment need to be reset after installing the lockout hardware?

Yes. Installing the lockout removes the factory eccentric and fixes the arm position mechanically; the alignment settings at both the camber and toe positions are locked at whatever position the arms are in at the time of installation. A full rear alignment must be performed using the adjustable arms before the lockout plates are torqued down, confirming both camber and toe are at the desired target values.

Is the EL 996 the right kit if I only want to lock one position?

If only the camber eccentric needs locking, the SPL ELC 996 is the more focused choice. If only the toe eccentric needs locking, the SPL ELT 996 covers that position. The EL 996 is the right kit when both positions will be locked in the same build; which is the typical approach for any 996 or 997 that sees regular track use, since both eccentrics are subject to the same slip failure mode under sustained high cornering loads.

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Description

SPL Parts Rear Camber and Toe Eccentric Lockout Kit for 996 / 997 Porsche 911

The factory eccentric bolts on the Porsche 996 and 997 are held in position by friction; the clamping force of the bolt against the eccentric washer is what keeps the rear camber and toe settings where they were set. Under the sustained high cornering loads of track driving, that friction can be overcome. The eccentric rotates, the alignment shifts, and the balance the driver was relying on changes mid-session. By the time the car returns to the paddock, the rear end is behaving differently from how it was set up; the cause may not even be immediately obvious. The SPL EL 996 combined eccentric lockout kit eliminates both failure points at once. CNC-machined 6061-T6 aluminum lockout plates replace the factory eccentric at both the rear lower control arm camber position and the rear toe arm toe position. Class 10.9 metric bolts and lock nuts create mechanically fixed connections at both locations; the eccentrics cannot rotate under any cornering load, and the rear camber and toe hold their aligned values through every session until they are deliberately changed.

Features

Combined kit; eliminates both rear camber and rear toe eccentric bolts in a single purchase
CNC-machined 6061-T6 aluminum lockout plates; precise fit to OEM eccentric bolt positions
Class 10.9 metric hardware; mechanically prevents eccentric rotation under sustained high cornering load
Both camber and toe positions locked simultaneously; the most complete rear alignment lockout solution for the 996 and 997 in one kit
More cost-effective than purchasing the SPL ELC 996 (camber only) and SPL ELT 996 (toe only) separately for builds addressing both positions

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 S: 997 | 2005-2012
Porsche 911 Carrera 4: 996, 997 | 1999-2012
Porsche 911 Carrera 4S: 996, 997 | 2002-2012
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 EL 996, the ELC 996, and the ELT 996? All three kits use the same 6061-T6 aluminum lockout plates and class 10.9 hardware. The EL 996 is the combined kit that eliminates both the rear lower control arm camber eccentric and the rear toe arm toe eccentric in a single purchase. The ELC 996 covers only the camber eccentric. The ELT 996 covers only the toe eccentric. For builds addressing both positions simultaneously, the combined EL 996 is the most efficient and most cost-effective option.
Why do the factory Porsche eccentric bolts slip under track conditions? The factory eccentric bolt system relies on friction between the bolt, the eccentric washer, and the mounting surface to hold the alignment setting. Under sustained lateral loading; the kind that comes from repeated hard cornering on a track or autocross event; that friction can be overcome and the eccentric rotates. Each rotation changes the rear camber or toe slightly, and over a session, those small changes accumulate into a meaningful alignment shift that affects the car’s balance and predictability.
What adjustable arm options does SPL provide for camber after the lockout is installed? Two options are available. The SPL LCA 996 V2 lower control arms provide camber adjustment at the lower arm connection, along with roll center and track width adjustment. The SPL DB 996 rear dog bone upper arms provide camber adjustment at the upper arm connection. Both approaches achieve adjustable rear camber; the choice depends on which part of the suspension geometry the builder is prioritizing. For rear toe adjustment after installing the lockout, the SPL RTA 996 is the compatible adjustable toe arm for the 996 and 997.
Does installing this kit require a full rear alignment afterward? Yes. Removing the factory eccentrics and installing lockout plates sets a fixed connection at both the camber and toe positions. The alignment must be set using the adjustable arms after installation, and a full rear alignment is required to confirm camber and toe are at the desired target values with the lockout hardware in place.
Does this kit fit the 996 GT3 and 997 GT3? The confirmed fitment from the source listing covers all 1999-2005 Porsche 996 and 2005-2012 Porsche 997 models. The 996 and 997 GT3 use the same rear eccentric bolt locations as the standard Carrera variants; this kit is confirmed to fit those models. Confirm your specific variant’s eccentric bolt configuration if you have a non-standard suspension setup.

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 and Toe Eccentric Lockout Kit for 996 / 997 Porsche 911 [SPLEL996]

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SPL Parts Rear Camber and Toe Eccentric Lockout Kit for 996 / 997 Porsche 911

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Notes

Frequently Asked Questions

About SPL Parts

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