Sunnen M27J65-71 Grit Cylinder Honing Stone Set - 280

The Sunnen M27J65-71 is a professional-grade silicon carbide honing stone set designed for precision cylinder finishing work. This 280 grit fine finish stone set is specifically engineered for honing short and blind cylinders in the 2.7 to 4.1 inch diameter range, producing a smooth 20Ra surface finish.

Key Features:

• 280 grit silicon carbide stones with vitrified bond for consistent cutting performance
• Four-piece set includes two shortened abrasive stones (2-13/16 inches long) and two aluminum wipers
• Cylinder diameter range: 2.7 to 4.1 inches
• Produces 20Ra finish for precision engine rebuilding applications
• Integral holders for secure mounting
• Compatible with Sunnen AN-style and Goodson GH cylinder hone heads

This honing stone set is ideal for automotive, marine, and powersports engine builders who require consistent, high-quality cylinder surface finishes. The shortened stone length makes these particularly well-suited for short stroke engines and blind hole applications. Replaces old Sunnen part number AN-501-71.