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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
* Ball-bearing Adjustment
Please verify if your vehicle is AWD or FWD before ordering
and dyno testing on higher output Stage 2 power levels
Factory-like mounting solutions are used for a perfect fit and long life
charge piping
Brian Crower Spring and Titanium Retainers - Subaru WRX / STI EJ205/EJ255/EJ257 2002-2021 Forged Pistons * Ball-bearing AdjustmentDesigned for high rpm, Brian Crower valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances. It is recommended that you upgrade valve springs whenever you change cams. Brian Crower valve train components are a great choice for your STI they are top quality at
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