Spectro Performance Oils - Gear Oil

This is the top-of-the-line, fully synthetic lubricant explicitly formulated to run in Harley® Big-Twin transmissions.

We combine the leading synthetic PAO base oils with the most advanced additive package available today, delivering maximum performance through high loads and extreme heat.

Heavy Duty Platinum reduces drag, friction losses, and wear, and extends gear life. It also provides exceptional temperature stability for easier, smoother shifting.

A.P.I. GL-1 rated.
Dyed green

$50.00