These are brand now in the box untouched, Flat Top +5cc 4.030" bore. Fully Coated pistons. From Summit the go for $708.00 a set, I will take $550.00 OBO just to get them off my shelf!
Manufacturer's Part Number: SBC125030F05
Part Type:Piston and Ring Kits
Product Line:Mahle PowerPak Piston and Ring Kits
Summit Racing Part Number:MLE-SBC125030F05
Bore (in): 4.030 in.
Bore (mm): 102.362mm
Piston Style: Flat top, with two valve reliefs
Piston Material: Forged aluminum
Compression Distance (in): 1.125 in.
Piston Head Volume (cc): +5.00cc
Wrist Pin Style: Press-fit or floating
Pin Diameter (in): 0.927 in.
File Fit: Yes
Top Ring Thickness: 1.5mm
Top Ring Material: Ductile iron
Top Ring Facing Material: Plasma-moly
Second Ring Thickness: 1.5mm
Second Ring Material: Cast iron
Second Ring Facing Material: Cast iron
Oil Ring Thickness: 3.0mm
Oil Ring Material: Chrome plated carbon steel
Oil Ring Tension: Standard
Quantity: Sold as a kit.
Mahle's PowerPak piston assemblies include forged pistons, piston rings, pins, and wire locks--all in one race-proven package. The pistons are hand-deburred and then coated with dry phosphate to protect against ring micro-welding and pin galling during initial startup. For additional performance, Mahle added its proprietary Grafal anti-friction coating to the piston skirts. Low drag rings, steel pins, and round wire locks complete the Mahle PowerPak package.