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V-Twin Primary Case Oil

Everyone thinks about the transmission side, but the clutch and primary chain need love, too.

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V-Twin Primary Case Oil

  • For 1984-to-present V-Twin American motorcycle engines, including Evolution, Twin Cam and aftermarket engines of similar design
  • Same fluid as our famous MTL gear oil
  • Improves clutch operation while reducing wear and temperature
  • Where most synthetics are too slippery for clutch operation, this friction-balanced product is balanced to provide less slip, smoother operation and helps to apply more power in modified engines
  • This product is for use in the primary chaincase with wet-diaphragm spring clutches
SKU: 42904
$15.95
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Full-synthetic formulations specific to the latest V-Twins, UTVs, ATVs and Sportbikes

Typical Properties

API Service Class GL-4
SAE Viscosity Grade (Motor Oil) 5W30
SAE Viscosity Grade (Gear Oil) 75W80
Vis @ 100°C 10.4
Vis @ 40°C 54.1
Viscosity Index 185
Pour Point, °C -50
Pour Point, °F -58
Brookfield Vis @ -40°C, P 120

Available Sizes

Quart 42904

*Only available from our dealers

Suitable replacement for:

API GL-4 / GL-3 / GL-1
SAE 75 / 80 / 75W80
SAE 30 / 5W30 / 10W30