Description
A precision ring compressor is essential for any engine rebuild—it ensures your piston rings stay perfectly seated during installation, preventing costly damage to your cylinder walls and rings. The AC-RC4155’s tapered design and tight tolerances eliminate guesswork, giving you the control and reliability that separates professional work from amateur mistakes. Built from billet aluminum and black anodized for durability, this compressor delivers the accuracy you need, whether you’re rebuilding a street engine or a track-focused build.
- 4.155 inch bore
- Tapered design
- Billet aluminum construction
- Black anodized finish
- Sold individually
- Bolt-on application






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