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Block contoured profile to minimize oil returning from the heads interfering with the crank
transferring more of the suspension's travel budget to cornering grip rather than body roll
BONUS FEATURE
Custom Tuning Required DWR1000 adjustable fuel pressure regulator
Hyper back finish
Brian Crower Steel Spring and Retainer Kit - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) PDM_clutch-replacement-parts Block contoured profile to minimizeThe Steel Spring and Retainer Kit is available for those of you who have upgraded the cams in the Subaru STI. Brian Crower Steel Spring and Retainer Kit SPECS: Wound from only the highest grade super clean chrome silicone alloys Feature proprietary processing procedures for consistent pressures Ideal for those adding aggressive cams Ideal for those adding more boost and more power Includes (16) valve springs Includes (16) retainers IF YOU UPGRADE CAMS
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