100 mm Plus 0.5 mm Bore 8.5-1 Dish Piston Set with Rings for 2004 Plus Subaru WRX STI STD Stroke

Sport Compact Platinum Series Lightweight Piston Set by Manley. Professional engine builders and elite tuners around the world are running Manley pistons for some very good reasons. Unique fixturing allowing skirt turning & ring groove machining to be performed in one single operation to ensure the ultimate ring groove to skirt squareness. Features -Wrist pin upgrades 9310 and Turbo Tuff/DLC alloys -Domestic 2618 alloy forgings -Better ring seal - More power -Offset wrist pin designs on many applications where appropriate -Total Seal piston rings used exclusively -Cam and barrel skirt profiles that make big power yet are friendly to the cylinder walls -Skirt coatings on many applications Compatibility: -2004 Plus Subaru WRX STI STD Stroke Specifications - Bore: 100 mm - Weight: 5.75 lbs