Wiseco Crankshaft Kit for Yamaha YZ-125 98-00


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One Part Number Contains Everything You Need for Your Bottom End Rebuild. All Wiseco Crankshafts Are Supplied Complete With Main Bearings and a Bottom End Gasket Kit. Now, by Ordering a Single Part Number, You Get Everything You Need for a Crank Swap in One Box. Every Wiseco Crank Has Been Rigorously Engineering and Field Tested to Ensure It Exceeds the Highest Quality Standards.

  • Crankshaft Kits Include Crankshaft, Top End Bearing, Premium Main Bearings and a Complete Bottom End Gasket Set That Includes All Seals and Gaskets Needed to Do the Job.
  • Crankshafts Are Factory Assembled and Precision Trued to OEM Specifications.
  • Double Forged Wiseco Connecting Rods Maintain Superior Dimensional Consistency Through Improved Grain Flow.
  • Shot Peening Eliminates Residual Stresses and Smoothly Blends the Rod Forging Surfaces.
  • Corrosion-Resistant Surface Treatment.
  • Top and Bottom End Rod Bores Case Hardened to 58-62 RC to Optimize Bearing Running Surface.
  • Precision Honing Ensures Ultra Round Bearing Surface.
  • Precision Engineered Oiling Slots Maximize Rod Strength and Bearing Life.
  • Double Drilled Small Ends Provide the Piston Pin With Extra Lubrication and Cooling, Reducing Distortion of Top End Due to Thermal Transfer From the Piston.
  • Silver-Coated Bronze Phosphor Thrust Washers, With Dimpled Design to Increase Oil Retention and Reduce Friction Between Rod and Washer Interface.
  • Caged Needle Roller Bearings Provide the Highest Possible RPM.
  • Precision MacHined Crank Webs.
  • Please Note: The Image Displayed Is Representative of the Item, but May Vary Slightly Depending on Your Specific Model.