CP Pistons & Rings Stock 86mm Bore for Evo X vendor_Clutch Masters Collars and upper mounts made

Collars and upper mounts made from 6061 aluminum with T6 for increased hardness

ARP head studs for your Subaru WRX and STI ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality

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5-ply silicone construction black

CP Pistons & Rings Stock 86mm Bore for Evo X vendor_Clutch Masters Collars and upper mounts madePart #: SC7220 From Drag to Endurance CP pistons have proven their quality in the racing community. These pistons for the 08 10 Evo X are avialable in 86mm stock bore, 86. 5mm w 0. 5 overbore, or 87. 0mm w 1. 0mm overbore and retain a 9. 0 compression ratio. These pistons are designed for high horsepower applications and are much stronger then OEM due to the forging process CP uses. The CP pistons for the Evo X 4B11 are an excellent choice for your