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You are here: Home > Pistons > Probe Forged Pistons > FPS - Factory Performance Series > Chevrolet > Chevrolet - 400 Small Block

Probe Sportsman Race Series (SRS) Pistons for the 350 Chevrolet Based Engines are manufactured on advanced 4032 forgings Most feature wire locks (or double spiral licks in some applications), forced pin oilers with oil distribution grooves, and lock removal indentations. They also feature gas accumulator grooves in the second land and double forced pin oilers with oil distribution grooves, as well as optional gas ports. Locks, wrist pins, and oil rail spacers (as required) are included.