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damping force adjustable range is made about three times wider
HP gains were seen up to 60+ at the wheels with engine management
Note: On the Subaru Legacy models the bar will need to be flipped upside down for better clearance of the spare tire well
It is possible to change the rate in the range of ± 2 kgf / mm from the standard spring rate
Perrin Boost Tube Kit (Black)- Subaru WRX VA Fk8 Radiator damping force adjustable range isSwap out your overheated factory top mount intercooler for the PERRIN Front Mount Intercooler to get the most out of your turbocharged STI. Add power and a new bold look all in one. If you don't already have a PERRIN Front Mount Intercooler Core, make sure you do.
