Perrin 2004-2021 Subaru STI Shifter Detent Kit | PSP-INR-042RD vendor_Alpharex Gains of 40-80whp (depending on

Gains of 40-80whp (depending on Turbo) have been seen by simply bolting the S2 cams in

13 mm size – specifically suited for reservoir/fitting interface on compatible systems

thanks to its 100% silicone construction

Compatible with MegaPower exhaust silencer

Perrin 2004-2021 Subaru STI Shifter Detent Kit | PSP-INR-042RD vendor_Alpharex Gains of 40-80whp (depending onFitment Information: Subaru STI 2004 2021 The PERRIN Shifter Detent Kit is an inexpensive upgrade that adds a crisp and solid feel to gear changes in your manual transmission STI. The PERRIN Shifter Detent Kit enhances gear shifting by providing a more defined feel for each gear position, including neutral. This upgrade delivers crisp, satisfying shifts, adding more enjoyment to driving your manual transmission Subaru! The PERRIN Shifter Detent Kit