Piston Kit - 66.40 mm - Yamaha

WISECO

Piston Kit - 66.40 mm - Yamaha

0910-0367

Regular price $209.95

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DESCRIPTION


Fitments

Years Make Model
1999 - 2024 Yamaha YZ 250
2016 - 2024 Yamaha YZ 250 X

Features

  • GP Series piston have additional features over standard Pro-Lite parts
  • Each piston is electra-coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling and detonation
  • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
  • Boost ports are removed for a more predictable powerband and increased pull on the top end
  • Kit includes piston, ring(s), wrist pin and circlips
  • Engineered, forged, and machined in the USA

  • Specs

  • Piston Diameter: 66.36 mm
  • Product Name: Piston Kit
  • Stroke Length: 72.00 mm
  • Units: Kit
  • Bore Size: 66.40 mm
  • Piston Material: 4032 Aluminum Alloy
  • Riding Style: Off-Road
  • Displacement: 249.30 cc
  • Engine Type: 2-Stroke
  • Bore - Oversize: Standard
  • Bore - Oversize: Standard
  • Model: GP Series
  • Skirt Coating: ArmorGlide®

  • Approximate Package Weight & Dimensions

  • Weight: 0.68
  • Height: 3.66
  • Length: 4.17
  • Width: 3.7