EK 630SHB - The World's First Five-Second ChainThis Top Fuel and Funny Bike drive chain is available exclusively through Pingel Enterprise. The EK 630SHB offers a tensile strength of 15,800 lbs. and is rated for bikes up to 500hp. The chain has a pin diameter of .295, the master plate measures .157. The pins are full diameter the full length of the pin. The pin groove is deeper and has a better quality clip to retain the master link plate. Two pins per link. To order, specify number of pins needed (must be an even number). Master link sold separately.