Speed-Pro combines our exclusive FM244 aluminium alloy, sophisiticated design, high technology CNC maching and Duroshield skirt coatingto deliver the ultimate hypereutectic piston.

• Hypereutectic
• Piston made with high strength alloy & silicon for excellent strength & scuff resistance.
• This advance combination allows tighter bore and improves sealing for less blow-by.
• Higher strength than cast, designed to retain standard ring gaps in top groove.
• DUROSHIELD skirt coated piston
• Moly-graphite coating, Extends engine life;  Reduces friction forhigher fuel economy and prevents damage from inadequate lubrication on start-up; Eliminates scuffing and wear; Helps improve cylinder sealing for less blow-by.

Piston Specifications :

• CID: 350
• Bore: 4.000
• Stroke: 3.480
• Rod Length: 5.700
• Compression Height: 1.560
• Compression Ratio with 58cc chamber volume: 9.83
• Compression Ratiowith 64cc chamber volume: 9.22
• Compression Ratiowith 72cc chamber volume: 8.53
• Dome Volume: -5.0cc
• Pin Type: Pressor Floating
• Recommended Ring Set: Moly - SPE251K STD, or File Fit - SPR9343 005