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: 407
• Bore: 4.155
• Stroke: 3.750
• Rod Length: 5.700
• Compression Height: 1.425
• Compression Ratio with 64cc chamber volume: 10.84
• Compression Ratio with 72cc chamber volume: 9.99
• Compression Ratio with 76cc chamber volume: 9.62
• Dome Volume: -6.0cc
• Pin Type: Press
• Recommended Ring Set: Moly - SPE243K 030, STD Fit - SPR10374 030, File Fit - SPR5879 035
• Coated skirt