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: 359
• Bore: 4.040
• Stroke: 3.500
• Rod Length: 5.780
• Compression Height: 1.645
• Compression Ratio with 63cc chamber volume: 10.15
• Compression Ratio with 67cc chamber volume: 9.72
• Compression Ratio with 76cc chamber volume: 8.86
• Dome Volume: -2.0cc
• Pin Type: Press
• Recommended Ring Set: Moly - SPE251K 040, STD Fit - N/A, File Fit - SPR9343 045
• Coated skirt

Product Reviews for SPH555CP 040 - SPEEDPRO