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: 309
• Bore: 3.756
• Stroke: 3.480
• Rod Length: 5.700
• Compression Height: 1.560
• Compression Ratio with 64cc chamber volume: 8.36
• Compression Ratio with 72cc chamber volume: 7.73
• Compression Ratio with 76cc chamber volume: 7.46
• Dome Volume: -5.0cc
• Pin Type: Press
• Recommended Ring Set: Moly - SPE356K 020, STD Fit - N/A, File Fit - N/A
• Coated skirt

Product Reviews for SPH534NP 020 - SPEEDPRO