Premium Race Series Piston Ring Set - J300 Low Tension JJ30008-4040-5 Wing Struts 10 or lower gears with

10 or lower gears with higher compression

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Chevrolet & Ford

Comp Ratio With 70cc Head: 10

Premium Race Series Piston Ring Set - J300 Low Tension JJ30008-4040-5 Wing Struts 10 or lower gears withPremium Race Series Piston Ring Set J300 Low Tension4. 040" Bore, 1 16" Top Ring, 1 16" Second Ring, 3mm Oil Ring JJ30008 4040 5 30008 4040 5 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. 040" Top Ring Height: 1 16" Top