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Wiseco Piston Kit 2.00mm Oversize 58.00mm Bore Yamaha YZ125 1976-1982 435M05800

Part Number: 435M05800
WISECO
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SKU:
435M05800
MPN:
435M05800
Condition:
New
Availability:
Ships Same Business Day
Weight:
0.45 LBS
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MSRP: $179.95
Now: $153.00
Was: $179.95
— You save $26.95
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Description

Yamaha YZ125 owners running 1976–1982 models face inevitable piston wear under competitive riding conditions. The Wiseco 435M05800 kit addresses this head-on with a 2.00mm oversize bore and precision-engineered construction that restores lost compression while delivering measurable gains in throttle response and engine longevity. If you're rebuilding after a top-end failure or proactively upgrading before the next race season, this kit ensures your engine performs at its peak without compromise.

  • Manufacturer: Wiseco
  • Part Number: 435M05800
  • Application: Yamaha YZ125 (1976–1982)
  • Bore Diameter: 58.00mm
  • Oversize: 2.00mm
  • Material: High-silicon aluminum alloy
  • Surface Finish: Diamond-turned
  • Expansion Rate: Low-expansion formula
  • Thermal Properties: Enhanced heat dissipation
  • Installation: Requires machine work (boring)
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Specs

BORE - OVERSIZE METRIC:
+2.00 MM
ENGINE TYPE:
2-STROKE
BORE SIZE METRIC:
58.00 MM
MODEL:
FORGED SERIES
PISTON DIAMETER METRIC:
57.95 MM
PRODUCT NAME:
PISTON KIT
SKIRT COATING:
NON-COATED
STROKE LENGTH METRIC:
50.00 MM
BORE - OVERSIZE:
+2,00 MM
DISPLACEMENT:
123 CC
PISTON MATERIAL:
4032 ALUMINUM ALLOY
RIDING STYLE:
OFF-ROAD
UNITS:
KIT
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Fitment

Fitment for Wiseco Piston Kit 2.00mm Oversize 58.00mm Bore Yamaha YZ125 1976-1982 435M05800

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