Supertech pistons are manufactured from extruded high silicon, enhanced 4032 alloy that low thermal expansion, excellent wear resistance and higher thermal conductivity. A phosphate dry lubricant coating is applied to pistons to protect against ring micro welding and enhance skirt lubrication.

Features

• Forged from enhanced 4032 alloy and CNC machined
• Contact reduction grooves are standard
• Honed & reamed pin bores and precise fit
• High tensile strength and evenly distributed hardness
• Withstands up to 42psi of turbo boost, w/alcohol, w/out any problems
• A 2 or 3 forging steps process yeilds a fine structural grain oriented in fibers in the same direction of the stresses.
• Wrist pins are constructed or cold extruded chrome molly steel for high strength to be used with the wire clip locks.
• Quality Control is performed after every step of the manufacturing process in climate controlled environments to ensure reliability of dimensions
• Rings, wrist pins, and wire locks are included.

K20A/A2/A3/Z1/Z3 Bore & Compression Ratio Options: 
(Note: add +.07cr with K20A3 head)

• 86mm / 9.0cr
• 86mm / 11.2cr
• 86mm / 12.0cr
• 86mm / 12.5cr
• 86.5mm / 9.0cr
• 86.5mm / 11.2cr
• 86.5mm / 12.1cr
• 86.5mm / 12.5cr
• 87mm / 11.5cr
• 87mm / 12.5cr