The absolute best and easiest way to install pistons into the cylinder bore is with one of our Tapered Ring Compressors. These tools gently squeeze the rings and funnel the piston into the bore without ring damage or breakage. Extra tall aluminum ring compressors are hard anodized for long life. Designed to work on blocks with studs, they also feature a handy finger registration groove. Available in different sizes.

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ARP Ring Compressor, Tapered, Billet Aluminum, Black Anodized, 4.105 in. Bore, Each

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ARP Ring Compressor, Tapered, Billet Aluminum, Black Anodized, 94.5mm Bore, Each

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Proform , Adjustable Piston Ring Compressor , 4.000" - 4.090

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