EK Motorcycle & ATV Chain
530DRZ2: The Pro Stock Racer’s Choice
Designed in conjunction with Pierre Elliott of Diamond Powersports, the EK 530DRZ is chosen by more top NHRA Pro Stock Bike competitors than any other chain. The reason is simple: When a championship is on the line, you can’t afford a failure. In 2004, Sam Wheeler used the 530DRZ in recording the fastest-ever terminal speed for a two-wheel vehicle: 338.269mph!
Recommended application: drag racing up to 300hp
Tensile strength: 11,500 lbs.
Available lengths: up to 160 links
this is the info I found
EK Motorcycle Drag Racing Chain
530 DRZ2
Looking for one of the best drag chains on the market?? Then look no further than the DRZ2. The DRZ2 has a tensile strength of 11,500 lbs and is recommended for applications up to 300 HP. The EK 530 DRZ2 is chosen by more top NHRA Pro Stock Bike competitors than any other chain. This is a non o-ring chain.
take a look at the 530ZZZ