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Features:

• Simulates the bore distortion of a torqued cylinder head during the honing, boring, and ring gapping process.
• Proven to reduce blowby, reduce oil consumption, and increase reliability.
• Essential for high performance engine builds.
• Top bore edge radius makes it comfortable for ring gapping.
• Included spacers duplicate cylinder head deck height to accurately reproduce block stresses.
• Use with aftermarket head studs or OEM head bolts.
• CNC machined from tempered and anodized aerospace grade aluminum.