80W-90 transmission oil for Big Twin Recommended for use with Harley Davidson® Big Twin 4, 5 and 6-speed transmissions Specific formula for high performance gearboxes The exceptional film resistance provides excellent protection against wear and ensures durability Exceptional selection of additives resistant to extreme pressures Ensures regular shifts in all revs Meets and exceeds API GL-5 classification Available in 1-quart bottles, 12 per pack; single sale Made in the USA