Maxima Racing Oils 40-02901 80w90 V-Twin Transmission/Gear Oil - 32 fl. oz. Maxima V-Twin Heavy-Duty Transmission & Gear Oil is a high-quality, mineral based motorcycle gear oil Recommended for use in 4-, 5- and 6-speed high performance gear boxes High film strength gear oil provides excellent protection against shock loads, viscosity loss and wear Extreme pressure additives and surface active chemistry allow smooth shifting under peak loads and RPMs Ultra-clean detergents protect gears from wear, deposits and allow for trouble-free operation