Company23 EJ20 Piston Ring Compressor

Features: 

- Gradual billet taper design precisely guides the piston into the bore. Will not damage piston or rings. 
- Adjustable diameter allows one tool to work on all stock and oversize pistons/bores of a particular engine. 
- Convenient tool-less thumb adjuster makes adjustments easy. 
- CNC machined from tempered and anodized aerospace grade alloy. 
- Fits engine bores from 90.17mm-93.98mm (3.55"-3.70") 
- Perfect for EJ20 engines (fits all stock and oversize pistons/bores) 
- Comparable to factory tool #398744300