Sealed Power Performance Piston Rings - 4.087 in Bore - Drop In - 5/64 x 5/64 x 3/16 in Thick - Standard Tension - Moly - 8-Cylinder 4125BU The unique bell-mouthed runner entrances

The unique bell-mouthed runner entrances maximize airflow and minimize shrouding - all while optimizing the available plenum volume for an unobstructed flow path over opposing runners

Includes a Steel Distributor Gear

May be used with most coil-over and non-coil-over shocks

3/4 in Opening

Sealed Power Performance Piston Rings - 4.087 in Bore - Drop In - 5/64 x 5/64 x 3/16 in Thick - Standard Tension - Moly - 8-Cylinder 4125BU The unique bell-mouthed runner entrancesProduct Description: Piston Rings Performance 4. 087 in Bore Drop In 5 64 x 5 64 x 3 16 in Thick Standard Tension Steel Moly 8 Cylinder Sealed Power engine products are application engineered components, including pistons, piston rings, engine bearings, oil pumps and lifters. These proven replacement parts are the result of product development efforts, dedicated to putting only the absolute best on the street. Our engineers design and validate the