The PERRIN lightened crank pulley in blue is specified for multiple models: 2015–2018 WRX, 2013–2020 BRZ, 2014–2018 FXT and 2013–2016 Crosstrek. As a reduced‑mass replacement for the factory pulley, it offers a direct swap intended to improve engine throttle response where compatible, and installs using the existing pulley mounting hardware.
PERRIN 15-18 Subaru WRX / 13-20 BRZ / 14-18 FXT / 13-16 Crosstrek Lightened Crank Pulley - Blue