Chemicals & Fluids › Sportster Gear & Chain Case Oil Image 1 of 1 Sportster Gear & Chain Case Oil $10.99 Mineral-based motorcycle gear oilFormulated for use in high performance V-Twin Sportster transmissions and primary chain casesDesigned for 1971 and newer Harley-Davidson® XR and XL Sportster transmissions and chain casesShear-stable formula minimizes chain and gear wearEnsures optimal clutch engagement, facilitating smooth shifts and enabling maximum powerExtends chain life by minimizing stretch and wear Quantity: Purchase Added! Mineral-based motorcycle gear oilFormulated for use in high performance V-Twin Sportster transmissions and primary chain casesDesigned for 1971 and newer Harley-Davidson® XR and XL Sportster transmissions and chain casesShear-stable formula minimizes chain and gear wearEnsures optimal clutch engagement, facilitating smooth shifts and enabling maximum powerExtends chain life by minimizing stretch and wear