Pistons: 4.005" Pin: 0.927 x 2.288 x 0.168 Wall, 118g Clips: Circlip 0.927 x 1.6mm without tang Rings: 4.00 + .005 1.5, 1.5, 3.0mm file fit Spacers: 4.000" - 4.040" 3mm
Technical Specs:
Cubic Inches: 403
Bore: 4.005"
Stroke: 4.000"
Rod Length: 6.125"
Compression Height: 1.105
Pin Diameter: 0.927"
Crown Volume: -4cc
Weight: 400g
Compression Ratio @ 66cc: 11.3:1
Compression Ratio @ 64cc: 11.5:1
Compression Ratio @ 72cc: 10.6:1
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.
