6.2 and 6.4 To 426 Forged Piston Set

When the seasoned NASCAR engine builders at Petty’s Garage were tasked with building the ultimate 426 HEMI for the street, naturally they turned to Mahle for the pistons. Mahle has helped Petty make the power for years, with the proven durability lap after lap. Now you can take advantage of this partnership in your 426 build, insist on Petty – Mahle pistons and get the power to win.

• Forged 2618 alloy
• 4.100" Bore
• .927" High strength, light weight German steel pins
• 9.8 to 1 compression ratio
• Gas Ported
• Fully-machined crown
• Grafal® anti-Friction coating on skirts*
• Phosphate-coated to reduce micro-welding and pin galling**
• Pin bores finished on CNC boring equipment
• Hand deburred
• Race-proven round wire locks
• 1.0, 1.0, 2.0mm File Fit Performance Ring Set Included
• Light weight slipper skirt forgings

* MAHLE’s GRAFAL® skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.

** Phosphate coating provides the grey appearance to the MAHLE piston. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oiling system of the engine reaches operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and microwelding. The piston crown is still machineable.