EK drag racing chains can rightfully be called the fastest chains in the world. Top Fuel champion Larry McBride set a world record E.T. of 5.80 seconds using the EK 630SHB chain. The EK 530DRZ has achieved a velocity of 344.048 mph on Sam Wheeler's E-Z-Hook Streamliner at the Bonneville Salt Flats. The EK 530DRZ is also the choice of more top NHRA Pro Stock motorcycle racers than any other chain. All drag race chains are roller chain and do not have o-rings or x-rings. Click here to view specs.