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ARP 3.890" Bore Piston Ring Compressor Tapered Billet Aluminum Black Anodize Each Sprint Car Radiators & Components Available Sizes: Youth Small (6 8) ACTT1S D03 Available Sizes: Youth Small (6 8) Designed for professional racing environments where split second improvements in pit stop times can make the winning difference NASCAR and NHRA drag racing and marine applications ARP's ring compressors are CNC machined from 6061 T6 billet tube material and feature a true radius for each different bore diameter
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