Speed Pro Hypereutectic Piston 4.060" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 16.0 cc - Coated Skirt 4122SMLBK Use your tire gauge to

Use your tire gauge to precisely dial in your final setting

Vehicle Applications: Subaru 2015-on WRX/ Forester

swap-out installation utilizing existing metering blocks

1991-1997 BMW 318is

It comes fully assembled with wire leads that you can connect to your existing wiring and is completely sealed from the elements for trouble free performance

Speed Pro Hypereutectic Piston 4.060" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 16.0 cc - Coated Skirt 4122SMLBK Use your tire gauge toSophisticated "barrel" profiles help optimize oil wedge between skirt and wall. Piston skirts protected by next gen DUROSHIELD coating. TAC ring groove geometry Weight matched to + 2 grams. Machined valve reliefs and circlip grooves; LR 63 lock rings for floated applicationsFrom pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for industry leading performance engine technologies,