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OEM mounts are made of sub-par material with rubber bushings that are infamous for deteriorating
Custom CP Pistons (any bore size
smooth articulation and eliminates bushing deflection under load
The CP pistons for the 2nd Gen Evo 8 & 9 4g63 are an excelent choice for your engine build
preventing debris like snow
Tomei Procam Camshafts 258 Exhaust Subaru EJ257 08+ USDM | TA301E-SB02C vendor_AutoMeter OEM mounts are made ofTA301E SB02C Fitment Information: Subaru STi 2008 2021 Dual AVCS EJ25 Features: Max lift 10. 8mm exhaust Exhaust camshafts ONLY Requires valve springs and retainers Notes: This part number is for exhaust camshafts only. Tomei cams are some of the best camshafts out on the market. These are a nice addition to stock heads and will help that EJ chop chop chop while making all the power! Don't forget, you'll need to set valve lash with these.