• 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 96.52mm-100.33mm (3.80"-3.95")
• Perfect for EJ25 engines (fits most stock and oversize pistons/bores)
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