Tarett Engineering Spring Adapter (Cayman / Boxster 987)

Spring ID Size

Designed to Fit

  • 2005 - 2012 Porsche Boxster / Boxster S
  • 2006 - 2012 Porsche Cayman / Cayman S

Note - sold individually, please order desired quantity. 

Product Details

The adaptor allows you to match a 60mm or 70mm ID spring up to the bottom of the factory or Tarett rear upper mounts on a 986 or 987.  This transfers all the spring load to the bottom of the mount instead of putting it on the weak rubber bushing of the stock mount, or the monoball of the monoball mounts.
 On a Cayman, this adaptor allows you to use any rate 60mm (2.36") rear spring with your PSS9/10 kit.  The PSS9/10 kits come supplied with a progressive tapered spring.  The bottom is 60mm,but the top is larger, making it impossible to replace with a different spring.  This adapter sits against the bottom of the upper strut mount, and allows the use of any off the shelf 60mm straight spring.  The PSS9/10 front springs are 60mm straight springs, allowing them to be replaced with no mods required.  We recommend revalving the struts for optimum performance when changing spring rates to over 550 lbs.

    About Tarett Engineering 
    Tarett Engineering designs and manufactures high-performance suspension components for both club and professional auto racing. They use aircraft-quality materials and hold the highest quality standards to provide our customers with products they can depend on to last and perform up to and beyond their expectations. Their goal is to provide our customers with high quality performance products at reasonable prices. You can be confident that all of our products are fully engineered and tested to meet this goal.

    They use the latest 3D CAD solid modeling and finite element analysis (FEA) software to insure that all our designs are reliable and optimized for strength, weight, and functionality for the applications that they are designed for.
    Their machinists are meticulous in their craft, and fabricate every part to the same exacting high quality standards. Component fabrication is performed on state of the art CNC lathes and milling machines, resulting in every part meeting our requirements for quality and fit. 

    Their designs are tested and proven on both the street and track, and our customers are among the most respected and fastest in the country.

    In addition to the products that we design and manufacture, we also carry suspension products from other manufacturers that we feel compliment our product line in design, value and quality.

    A customers carWhether you’re setting up a car for street or track, from a 911 to 997, we can help with the parts and advice you need. Please feel free to contact us for any of your suspension needs and questions.