What is the difference between the SPL RTA 996 standalone arm and the SPL RTAEL 996 bundle?

The RTA 996 is the toe arm pair on its own; it provides extended toe adjustment range, up to 0.5 inches of bumpsteer adjustment, and FK spherical rod ends. The RTAEL 996 is a bundle that includes the same toe arms plus an eccentric lockout kit; the lockout plates replace the factory toe eccentric bolts, which are prone to slipping under high cornering loads, with a mechanically fixed connection that cannot rotate. For track-prepared builds where eccentric slip is a concern, the RTAEL 996 bundle is the more complete solution.

What are the two separate rear toe problems that lowering a 996 or 997 creates?

The first is static: when the car is lowered, the rear suspension geometry moves the toe toward excessive toe-in that exceeds the factory eccentric bolt's adjustment range. This leaves the car running more toe-in than intended at rest. The second is dynamic: as the suspension moves through bump and rebound at the lowered ride height, the toe angle changes dynamically in ways the geometry wasn't designed for; this is bumpsteer. The RTA 996 addresses static toe by extending the adjustment range, and addresses bumpsteer by allowing the arm's pivot point to be relocated with the stainless spacers; up to 0.5 inches of correction.

How do the bumpsteer spacers work?

The 304 stainless steel spacers in 1/8 and 1/4-inch heights are placed at the arm's inboard pivot connection to raise or lower the effective pivot height relative to the wheel. Moving the pivot changes the angle of the toe arm relative to the suspension's arc of travel, which changes how much the toe angle changes as the suspension compresses. The correct spacer stack for a given ride height is determined at an alignment rack using bumpsteer measurement; different combinations of the two spacer sizes allow incremental adjustment to dial in minimum toe change through the suspension's range.

Will these arms fit the 986 Boxster?

Yes. The SPL RTA 996 fits the 1997-2004 Porsche Boxster (986) in addition to the 996, 997, and 987 Boxster and Cayman. The rear toe arm mounting geometry is shared across these platforms.

Are replacement rod ends available for the SPL RTA 996?

Yes. SPL Parts offers replacement rod ends for the RTA 996 in both left and right hand thread..

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

SPL Parts Adjustable Bumpsteer Rear Toe Arms for 98x / 99x Porsche 911 / Boxster / Cayman

Lowering a 996, 997, 986, or 987 Porsche introduces two rear toe problems simultaneously. The first is static: the rear suspension geometry moves the toe toward excessive toe-in beyond what the factory eccentric bolt can correct back out. The second is dynamic: as the suspension compresses through bumps and cornering, the toe angle changes in ways the geometry was not designed to handle at the lowered ride height. That dynamic toe change is bumpsteer; unpredictable toe movement that shows up as instability over rough roads, unexpected behavior through track curbing, and inconsistent response under trail braking. The SPL RTA 996 adjustable rear toe arms address both problems in a single arm. The wide adjustment range extends well beyond the factory eccentric bolt’s travel, giving alignment technicians the range needed to bring toe to the correct target at whatever ride height the car is running. The included stackable 304 stainless steel bumpsteer spacers in 1/8 and 1/4-inch sizes allow the rear toe arm pivot to be relocated precisely; up to 0.5 inches of bumpsteer adjustment are available, covering the full correction range needed on significantly lowered 996, 997, 986, and 987 builds. Static toe and dynamic bumpsteer can be optimized independently.

Features

Extended rear toe adjustment range beyond the factory eccentric bolt; corrects static toe-in that lowering introduces beyond the factory system’s reach
Up to 0.5 inches of bumpsteer adjustment via stackable 304 stainless steel spacers in 1/8 and 1/4-inch sizes; independently corrects dynamic toe change through bump and rebound
Three-piece PTFE-lined FK spherical rod ends manufactured in the USA; eliminates rubber bushing deflection; rear toe holds its set position under all load conditions
Hollow 6061-T6 aluminum arms, black anodized; SPL exclusive 360-degree rotating clamp; locks toe setting without jam nuts; single allen key adjustment
Suitable for daily driver through race car use

Specifications

Body Material: 2024-T351 aluminum (gun-drilled, black anodized)
Heim Joints: PTFE-lined FK USA spherical bearings
Toe Adjustment: Wide range — past OEM eccentric limits
Bumpsteer Adjustment: Up to 0.5″
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 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
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 Boxster: 986, 987 | 1997-2012
Porsche Boxster S: 986, 987 | 1997-2012
Porsche Boxster Spyder: 987 | 2010-2012
Porsche Cayman: 987 | 2005-2012
Porsche Cayman R: 987 | 2011-2012
Porsche Cayman S: 987 | 2005-2012

Notes

Installation Instructions
Replacement rod ends available from SPL Parts in left and right hand thread, please contact us
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 RTA 996 standalone arm and the SPL RTAEL 996 bundle? The RTA 996 is the toe arm pair on its own; it provides extended toe adjustment range, up to 0.5 inches of bumpsteer adjustment, and FK spherical rod ends. The RTAEL 996 is a bundle that includes the same toe arms plus an eccentric lockout kit; the lockout plates replace the factory toe eccentric bolts, which are prone to slipping under high cornering loads, with a mechanically fixed connection that cannot rotate. For track-prepared builds where eccentric slip is a concern, the RTAEL 996 bundle is the more complete solution.
What are the two separate rear toe problems that lowering a 996 or 997 creates? The first is static: when the car is lowered, the rear suspension geometry moves the toe toward excessive toe-in that exceeds the factory eccentric bolt’s adjustment range. This leaves the car running more toe-in than intended at rest. The second is dynamic: as the suspension moves through bump and rebound at the lowered ride height, the toe angle changes dynamically in ways the geometry wasn’t designed for; this is bumpsteer. The RTA 996 addresses static toe by extending the adjustment range, and addresses bumpsteer by allowing the arm’s pivot point to be relocated with the stainless spacers; up to 0.5 inches of correction.
How do the bumpsteer spacers work? The 304 stainless steel spacers in 1/8 and 1/4-inch heights are placed at the arm’s inboard pivot connection to raise or lower the effective pivot height relative to the wheel. Moving the pivot changes the angle of the toe arm relative to the suspension’s arc of travel, which changes how much the toe angle changes as the suspension compresses. The correct spacer stack for a given ride height is determined at an alignment rack using bumpsteer measurement; different combinations of the two spacer sizes allow incremental adjustment to dial in minimum toe change through the suspension’s range.
Will these arms fit the 986 Boxster? Yes. The SPL RTA 996 fits the 1997-2004 Porsche Boxster (986) in addition to the 996, 997, and 987 Boxster and Cayman. The rear toe arm mounting geometry is shared across these platforms.
Are replacement rod ends available for the SPL RTA 996? Yes. SPL Parts offers replacement rod ends for the RTA 996 in both left and right hand thread. Please contact the Bulletproof Sales Team

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.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

SPL Parts Adjustable Bumpsteer Rear Toe Arms for 98x / 99x Porsche 911 / Boxster / Cayman [SPLRTA996]

Guaranteed Safe Checkout

SPL Parts Adjustable Bumpsteer Rear Toe Arms for 98x / 99x Porsche 911 / Boxster / Cayman

Features

Specifications

Applications

Notes

Frequently Asked Questions

About SPL Parts

Reviews