Sparex source: https://us.sparex.com/piston-0-020-67002.html Product: Piston (0.020'') - Sparex S.67002 SKU: S.67002 Listing note: Piston Length mmCompression HeightBore ØBowl DepthChamber ØPin Ø: 38.00mmNo. of Rings Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.