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- 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