Description Our new F.S.R. hollow dome GP (Gas Ported) piston line is designed for circle track and drag racing applications. They are lighter than traditional full round pistons (including wrist pin and rings), but are stronger and more durable due to an advanced FEA-designed forging. Attributes GTIN: 00193564197030 Brand Name: JE Pistons Add-On: JG7708-4625-5 Add-On: 990-2500-18-51C Add-On: 990-073-MW Bore Diameter: 4.625 Compression Height: 1.060 Cylinder Head: OPEN CHAMBER Engine: BIG BLOCK CHEVY Forging Type: FSR Industry: Automotive Make: CHEVROLET Oil Ring Thickness: 0.149 Out of Stock Message: Call for Availability Piston Avg Wt: 639.

Piston Head Type: Dome Piston Material: 2618 Piston Pin Length: 2.500 Piston Pin Material: 5115 Piston Pin Outside Diameter: 0.990 Piston Pin Wall Thickness: 0.180 Piston Volume: 40 Product Market: Domestic Ringset Included: No Second Compression Ring Thickness: 0.044 Top Compression Ring Thickness: 0.044 Extended Information Country of Origin: United States Emissions : Electronically Announced Life Cycle Status: Available To Order Packing Information Quantity of Each: 1 Package UOM: EA Dimension: 5.00 x 5.00 x 5.00 inches Weight: 1.8 lb.