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The IAG Performance / Crest CNC Stage X Short Block replaces the factory cast aluminum case halves entirely with precision billet/sleeved Crest CNC case halves -- eliminating virtually every structural weakness in the factory EJ25
Without locking the internal gate
On cars used for autocross
RallySport Direct proudly carries a great selection of quality racing radiators and cooling upgrades brought to you by CSF
PERRIN Clutch Delay Valve Delete - Red 2005-2021 Subaru STI / 2006-2025 WRX / 2005-2009 LGT/OBXT PDM_diffusers-and-vortex-generators The IAG Performance / CrestImproved Clutch Feel The OEM delay valve causes inconsistent clutch engagement and unintended clutch slipping during aggressive driving. The PERRIN Clutch Delay Valve Delete optimizes the feel of your clutch engagement by removing the OEM delay valve in the clutch slave cylinder. Easier to Bleed Unlike outdated methods that involve gutting the OEM valve and leaving behind a leftover cavity with small holes and a sleeve that blocks the bleeder valve,