ARP 4.100" Billet Ring Compressor (900-1000)
ARP Inc.$67.99
ARP's ring compressor is CNC-machined from 6061-T6 billet tube material with a true radius matched to the bore, so piston rings compress evenly for smooth, damage-free installation...
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ARP's ring compressor is CNC-machined from 6061-T6 billet tube material with a true radius matched to the bore, so piston rings compress evenly for smooth, damage-free installation. This one is sized for a 4.100-inch bore.
It is relieved for wire O-rings on the bottom and finished with hard Type 3 anodizing for long life, with the bore size prominently engraved in large numbers for quick identification.