Vertex Big Bore Super Mini Piston

Item Number: 326529


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Product Description

Vertex Pistons

Vertex Big Bore Super Mini Piston

  • All Pistons are heat treated with a T-5 hardening and tempering cycle
  • All piston skirts are coated with a high tech molybdenum disulphite coating for faster break in time and increased piston life
  • Big Bore pistons increase engine displacement, torque and peak horsepower while maintaining stock compression ratios
  • Kits include piston, rings, wrist pin and circlips
  • Sold per cylinder

Spec Details
Bore Varies (make selection above)
Displacement Varies (make selection above)
Piston Diameter Varies (make selection above)
Size Over Standard Varies (make selection above)

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping. Don't waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.


  • RM85 2002-2010, 2012, 2015-2016


  • YZ85 2002-2018

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Questions & Answers