Wiseco Forged Piston Set | Multiple Fitments (K637M73)

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Forged Piston Set for the 2007+ Honda Fit (GD3/GE8/GK5) and the 2011-2016 Honda CR-Z (ZF1/ZF2) by Wiseco

Wiseco Sport Compact pistons are made from dedicated forgings produced in-house to provide a light weight piston with superior strength and optimal design. As the multivalve piston technology leader, the line features specially designed valve pockets, complex dome and crown shapes, the steel nitride/napier xx rings and optimized skirt profiles. The pistons come standard with Wiseco ArmorGlide coating material for reduced friction and noise, freeing up horsepower.

These Wiseco Forged Pistons have a 10:1 compression ratio making it an ideal solution for forced induction applications looking to run specifications close to the OEM pistons.


  • Compression Ratio: 10:1
  • Average Weight: 203g
  • Bore: 73mm (2.874in)
  • Size: Standard
  • Stroke: 89.4mm (3.52in)
  • Rod: 149mm (5.866in)
  • Compression Height: 26.16mm (1.030in)
  • Head cc's: 26
  • Volume: -11.5 cc
  • Gasket Thickness: .76mm (0.03in)
  • Deck Clearance: .13mm (.005in)
  • Block Height: 220mm (8.661in)
  • Pins: 18mm

Please Note: The Honda CR-Z and GD3/GE8 Fits all have a 10.4:1 compression ratio while the GK5 Fit has a 11.5:1 compression ratio.


  • 2015 - 2018 Honda Fit (GK5)
  • 2009 - 2013 Honda Fit (GE8)
  • 2007 - 2008 Honda Fit (GD3)
  • 2011 - 2016 Honda CR-Z (ZF1/ZF2)


  • 2618 Aluminum Alloy construction allows for a superior weight to strength ratio
  • Strutted Forging for improved strength
  • Armor Glide skirt coating reduces friction for more power and less piston rock
  • Include rings and pins for easy install
  • Forged in-house to eliminate defects
  • Made in the USA

What's In The Box?

  • 1 - Forged Piston Set
  • 1 - Set of Pins and Rings
  • Warranty Information



Wiseco Manufacturer's Warranty

Customer Reviews

Based on 1 review
Maurice Blankenship
Great piston

Just what I wanted. Fast shipping awesome product