Description
Installing pistons requires precision, and a quality ring compressor is non-negotiable if you want consistent ring seating and a clean, damage-free installation. The ARP 4.020 Tapered Ring Compressor delivers the exact bore fit needed for 4.020″ pistons, eliminating the risk of ring binding or scratching cylinder walls during assembly. Built from billet aluminum and finished in black anodize, this tool is built to last through countless rebuilds.
- 4.020″ bore diameter
- Tapered design
- Billet aluminum construction
- Black anodized finish
- Sold individually
- Bolt-on installation






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