Supertech Forged Piston Kit - K-series (K20A-Z)

Supertech Forged Piston Kit - K-series (K20A-Z)

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.


  • 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
Product images shown for illustration purposes. Piston style will vary depending on application.

Supertech Forged Piston Kit - K-series (K20A-Z)

Regular price Sale $496.06
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Ships: 1-5 business days
This is an estimated ship date once your order is placed from JHPUSA. Ship dates do not include weekends and holidays.
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