You want to make your bike the best for you, and that means personalizing every detail. This double row premium primary chain if perfect for your Harley. Made in the USA, it’s a 76-link endless double row primary chain that’s made for Road King models. It fits 5-speed Big Twins from 1980 to the present (except Dyna Glide and Softail models). Replaces part OEM 40037-79.