MAHLE PISTONS - Motorsports Pistons GM LS PowerPak Piston & Ring Kits,Bore: 4.075 in. (L92055075I08)

The Mahle PowerPak is a complete, race proven piston assembly kit composed of hand deburred, forged, performance coated pistons, high-quality steel pins, round wire locks and low drag performance rings. Performance coatings include a phosphate dry lubricant that is used to protect against ring micro-welding and pin galling during initial startup and break-in. For additional performance, Mahle applies its proprietary Grafal anti-friction coating to each piston skirt.

Features

• Forged Aluminum Pistons
• CNC machined crown
• Hand deburred finishing
• Forced pin oiling with machined drain backs
• Lightweight slipper skirt forgings
• CNC finished pin bores
• Forced Pin Oiling
• Race Proven, reliable round wire locks, standard with every kit
• Pre-fitted German steel pins noted for their high strength, lightweight, and durability
• 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 oil system of the engine reached operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and micro welding. Piston crown remains machineable.
• Mahle's Grafal Skirt Coating - Reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
• Precision ring grooves for included piston rings
  
  

  L92/LS3 Chevy

• Inverted Dome Pistons
• 1.5, 1.5, 3.0 mm Rings
  
  

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  Technical Specs:
• Cubic Inches: 428
• Bore: 4.075"
• Stroke: 4.125"
• Rod Length: 6.125"
• Compression Height: 1.055R
• Pin Diameter: 0.927"
• Crown Volume: -8cc Inverted Dome
• Weight: 427g
• Compression Ratio @ 70cc: 10.9:1
  
  L92/LS3 Chevy PowerPak Piston & Ring Kit
  
  
• Forged 4032 High Silicon Aluminum Alloy
• Bore: 4.075 in.
• Pin Diameter: 0.927 in.
• -8cc Inverted Dome Volume
• Compression Ratio @70cc: 10.9:1