These struts are manufactured by BILSTEIN exclusively for GTWORX using customized SPORT/TRACK valving matched to the RCE Yellow or Black performance springs. GTWORX has filled the need for a capable high performance damper for the 2008-2014 WRX STI.
After observing the poor results of pairing lowering springs with the standard Subaru dampers, GTWORX decided to start from scratch and develop an entirely new spring and damper package in conjunction with the world-renowned shock experts at BILSTEIN . The goal was to transform the STi into a precision handling machine. Extensive testing was conducted at BILSTEIN USA West headquarters in Poway, California to perfectly match the monotube, gas charged, inverted front struts and rear shock system with Racecomp Engineering springs. Several damping profiles were considered, with the final selection exceeding all expectations. An emphasis on low speed bump and gas pressure provide a platform to stabilize the chassis and is normally recognized as a reduction in initial body roll, pitch, and dive. These dampers also provide an excellent option for stock class autocrossers looking for an OEM fitment damper that has firmer damping and large amount of gas pressure to pair with stock springs.
Note that these struts are NOT compatible with OEM 2011-2014 STI springs. (The spring length is too short.) They are compatible with 2008-2010 OEM STI springs, or any lowering spring for this application.
Detailed installation instructions can be found HERE.
The rear shocks feature an adjustable circlip for +5 mm, +10 mm or -5 mm, -10 mm rear ride height. Designed for both STI sedan and hatchback, these make your STI handle like it should from the factory!
Set of four struts. Fits all 2008-2014 Subaru WRX STI. (Does NOT fit WRX.)