Brian Crower Subaru EJ205-WRX/EJ257-STi Single Spring & Titanium Retainer KitDesigned for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. Type BC1600 Single Free Length 1. 788" Seat 1. 420" @ 80 lbs Open 1. 000" @ 178 lbs Coil Bind 0. 850" Retainer BC2300 16 Spring Seat OEM Net Cam Lift 0. 480" 12. 19mm
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Brian Crower Subaru EJ205-WRX/EJ257-STi Single Spring & Titanium Retainer Kit