High-Performance Full-Synthetic Primary Oil
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S&S Cycle’s new Extreme Duty Primary Oil is formulated specifically for use in primary chain cases of Harley-Davidson® big twin and Sportster® models. This is a petroleum-based lubricant with high shear stability and the ability to withstand extreme loads. Special polymer additives allow it to remain stable at elevated temperatures and provide exceptional clutch engagement. The SAE 85w viscosity provides low drag and frictional losses and eliminates clutch drag and slipping.



  • Highest Zinc content on the market
  • Exceeds S&S and Harley-Davidson warranty requirements
  • Made in the USA
  • Item #: r6c3603-0044

High-Performance Full-Synthetic Primary Oil

Price: $14.95
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