JE Pistons Premium Race Series Piston Ring Set - J100 Standard Tension JJ100F8-4060-5 Fuel System They feature an internal baffle

They feature an internal baffle inside the cap which helps to reduce transfer of oil to catch can

or blocks with Active Fuel Management (AFM)

Part Number: AF9201-300-225

Hex Head Black Oxidefits GM LS Series LS1

JE Pistons Premium Race Series Piston Ring Set - J100 Standard Tension JJ100F8-4060-5 Fuel System They feature an internal bafflePremium Race Series Piston Ring Set J100 Standard Tension4. 060" Bore, 1 16" Top Ring, 1 16" Second Ring, 3 16" Oil Ring Brand: JE Part Number: JJ100F8 4060 5 Description: JE Premium Race Series rings feature the highest quality ductile iron top ring with the latest technology plasma moly inlay. Taper faced reverse torsional second rings or gapless seconds are combined with either standard or low tension oil control rings. Specifications Bore: 4. 060"