Lightweight Lightening holes in the center of the inner and outer sideplates reduce the ZZZ’s overall weight by the equivalent of at least one chain link, without compromising tensile strength. These holes also help extend the ZZZ’s service life by dissipating heat and helping evacuate mud and dirt.
Zero Stretch Technology
EK’s exclusive Zero Stretch Technology
reduces chain stretch to near zero in the first 600 miles (1000km) of use. Not only does this eliminate the nuisance of a 600-mile chain adjustment, but also helps minimize excessive sag throughout the chain’s entire service life. EK Zero Stretch Technology is standard on the 520ZZZ, and optional on the 520RXO and all MVXZ series chains.