• Chrome-plated piston pin
• Horizontal slot pin oiling
• Pressure seal groove
• Skirt-coated
• Dedicated rings
• Improved flame travel
• Scuff-resistant
• Maximum ring seal
• Maximum compression and oil control
• 1691cc Displacement
• 3.750″ STD Bore
• 3.875″ Actual bore (.125″ oversize)
• 4.375″ Stroke
• Cylinder boring required



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