Available on both hypereutectic and POWERFORGED pistons, DUROSHIELD is an exclusive moly-graphite skirt
coating that extends engine life and essentially eliminates scuffing. This technologically advanced coating is precisely applied to the piston through a computer-controlled process.

DUROSHIELD skirt coated pistons:

• Reduce friction for increased fuel economy and horsepower
• Essentially eliminate scuffing and wear
• Prevent damage from inadequate lubrication, especially at start-up
• Improve cylinder sealing for less blow-by and more power
• Require no increase in skirt clearance

Piston Specifications :

• CID: 489
• Bore: 4.280
• Stroke: 4.250
• Rod Length: 6.135
• Compression Height: 1.525
• Compression Ratio with 100cc chamber volume: 10.62
• Compression Ratio with 117cc chamber volume: 9.34
• Compression Ratio with 124cc chamber volume: 8.88
• Dome Volume: +11.2cc
• Pin Type: Press or Float
• Recommended Ring Set: Moly - SPE233K 030, STD Fit - SPR9905 030, File Fit - SPR9590 035
• Coated skirt