top of page


  • Special lubricity additives reduce sliding friction for exceptionally smooth and quiet shifting, and maximum power
  • Resists viscosity breakdown caused by gear shearing action
  • Exclusive Bel-Ray extreme-pressure chemistry protects gear components from the destructive effects of shock loading
  • Superior oxidation protection prevents thermal oil degradation for extended performance
  • High-temperature protection, high-viscosity-index base oils maintain film strength over a wide temperature range
  • Distinctive red color makes transmission leaks easy to detect


  • Product Name: Oil
  • Type: Transmission
  • Style: Big Twin
  • Dispenser Type: Bottle
  • Viscosity (Weight): 85W-140
  • Oil Base: Conventional (Mineral)
  • Application: 4 Stroke
  • Container Size: 33.8 US fl oz. / 1 liter
  • Units: Each
  • Riding Style: Street

BEL-RAY Harley Big Twin Transmission Oil 1 Liter

SKU: 3603-0031
    bottom of page