These AMS Spec pistons have a specially designed quench area that improves power and reduces the chance of detonation. All kits include special heavy-duty pistons, which are designed and manufactured to perform flawlessly under the extreme heat and PRESSURE associated with turbocharged engines. Ideal for both street and serious competition, these pistons are loaded with extra features such as annular pin hole grooves with double forced oil holes to prevent pinhole galling, and taper lands to prevent scuffing. Extra thick lands for superior ring groove support under extreme pressure are made possible by intersecting the ring groove with the pinhole and using ROSS Oil Ring Support Rails. 4340 taper bore, hard-chromed extra heavy duty pins, along with Ross Racing Rings are included.
IF YOU ARE NOT RUNNING A STOCK BORE MOTOR PLEASE BE SURE TO SPECIFY CYLINDER BORE SIZE WHEN ORDERING
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