ARP 900-1300 PISTON RING COMPRESSOR (4.130" BORE)
Assemble the bottom end in your engine with the ARP 900-1300 Piston Ring Compressor (4.130" Bore). Each Piston Ring Compressor is CNC machined from from 6061-T6 billet aluminum tube material. Each ARP Piston Ring Compressor is specially made to your specific bore size. This is a must-have in the toolbox for anyone that builds engines.