986 SPB PSS9 Spring Upgrade Kit, 450/500 RateDescription: Running Boxster Spec or SPB and don't want to hassle with "other" brands and their NON Compatibility with the PSS9's? Want to use the number one spring in NASCAR? Tarett Engineering brings you SWIFT racing springs!! These springs are physically lighter than anything on the market and are sold in METRIC sizes! (Bilstein utilizes metric springs) This "kit" supplies you with the class legal 450 500 rates you need to be legal. These are a

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and adjustable cable mounting blocks for easy install

we recommend also having the dampers revalved by Bilstein

and the main/tender spacer

"Sold as each - Two mounts required per car"

unique rain setups

Relocating a lightweight battery to the smugglers box is a standard modification to track and high-performance street 911's

75” OD x

Fully machined surfaces for a precision fit

Built as an “entry-level” (yet still race-capable and winning) damper

Built to Order - please select the correct transmission and color on the drop down menu

Designed for and compatible with 119 & 129 series seats