90mm Cast Aluminum Flat Top Piston for Big Block GX

90mm cast aluminum piston to fit 90mm bore blocks. Uses GX390 wrist pin diameter. Includes pin, rings, and clips.

Install this piston with the arrow facing down.

• Wrist Pin Diameter: 20.0mm (.787")
• Wrist Pin Length: 61.95mm (2.438")
• Compression Height: 27.15mm (1.068")
• Crown is flat, no dish.
• Weight: 380g with pin.
• Uses 1.2mm-1.45mm-2.5mm piston rings.