Description
A ring compressor is non-negotiable for any engine rebuild—it ensures your piston rings stay perfectly seated during installation, preventing damage that could compromise compression and performance. The Proform adjustable design accommodates a wider bore range, making it a versatile tool for shops and enthusiasts working with multiple engine platforms. Billet aluminum construction and precision engineering mean this compressor will deliver consistent, reliable results across countless rebuilds.
- Bore range: 4.205–4.310 in
- Adjustable design
- Billet aluminum body
- Red anodized finish
- Sold individually
- Proform MPN: 66768






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