# SPL Parts Porsche 996/997/986/987 Adjustable Caster/Trailing Arms SPL Caster/Thrust/Tension rods provide a wide range of front or rear caster adjustment, allowing precise alignment for optimal turn-in response and to compensate for variances between left and right caster. Any changes to camber will change caster necessitating adjustable arms for a proper alignment. Low-friction, smooth articulating FK Spherical Bearings eliminate the stock mushy rubber bushing to provide a more responsive steering feel. Anti dive (when installed in the front) and anti squat (when installed in the rear) adjustment is achieved with Stainless Steel spacers for the forward mounting position of the trailing/caster arm, allowing you to raise or lower this pivot point and fine tune the balance of your car. These arms are designed to be used with the OEM or OEM style front or rear lower control arms.Our parts are engineered for maximum performance. Billet Aluminum alloy 2024 hex rods are precision CNC machined and gun drilled to reduce unsprung weight while maintaining high strength and stiffness. Our exclusive 360 degree Rotating Clamp design allows for easy access to quickly and precisely locking in your desired alignment settings. Long gone are the days of fumbling with wrenches to tighten jam nuts while trying to trying to keep your bearings oriented correctly. Blue Anodized Titanium hardware shaves even more unsprung weight from the arms and offers superior strength. These arms are designed for use in high performance street and race vehicles - Proudly made, engineered, and assembled in the USA. This Part Fits: Year Make Model Submodel 2004 Porsche 911 40th Anniversary Edition 1999-2012 Porsche 911 Carrera 1999-2004,2006-2012 Porsche 911 Carrera 4 2012 Porsche 911 Carrera 4 GTS 2002-2012 Porsche 911 Carrera 4S 2011-2012 Porsche 911 Carrera GTS 2005-2012 Porsche 911 Carrera S 2002-2005,2008-2009 Porsche 911 GT2 2011 Porsche 911 GT2 RS 2004-2005,2007-2008,2010-2011 Porsche 911 GT3 2007-2008,2011 Porsche 911 GT3 RS 2011 Porsche 911 GT3 RS 4.0 2011 Porsche 911 Speedster 2002 Porsche 911 Targa 2007-2012 Porsche 911 Targa 4 2007-2012 Porsche 911 Targa 4S 2001-2005,2007-2013 Porsche 911 Turbo 2005,2011-2013 Porsche 911 Turbo S 1997-1999,2004-2012 Porsche Boxster Base 2008 Porsche Boxster Limited Edition 2000-2003 Porsche Boxster Roadster 2000-2003 Porsche Boxster Roadster S 2008 Porsche Boxster RS 60 Spyder 2004-2012 Porsche Boxster S 2012 Porsche Boxster S Black Edition 2008 Porsche Boxster S Limited Edition 2009 Porsche Boxster S Porsche Design 2 2004 Porsche Boxster S Special Edition 2011-2012 Porsche Boxster Spyder 2007-2012 Porsche Cayman Base 2012 Porsche Cayman R 2006-2012 Porsche Cayman S ## Details - **Price:** 1041.89 CAD - **Vendor:** SPL Parts - **Type:** Suspension Arms & Components ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1041.89 CAD | In stock | ## Images - Photo - Primary - User 1 - Photo - out of package - Photo - out of package - User 1 - User 1 - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/spl-parts-porsche-996-997-986-987-adjustable-caster-trailing-arms) > Updated: 2026-07-13