EK 520ZZZ - The Ultimate Street Performance Chain

Whether you use your sportbike for road riding, track days or stunting, EK has a chain that’s up to the challenge. Every EK Chain is engineered with the same precision and advanced technology used in their pro racing chains. No one knows more about sealed chains than EK. After all, they invented the O-ring chain for motorcycles way back in 1974. Since then, they have improved on their invention with the revolutionary Quadra-X Ring seal. The Quadra-X Ring reduces friction by as much as 50 percent, thanks to its smaller contact area. Yet it offers even better sealing than a conventional O-ring, because it has twice as many contact points between the ring and sideplates. It’s the optimal combination of maximum sealing protection with minimum friction. Many sealed chains are a trade-off: In the quest for low friction, the quality of the seal between the rings and sideplates is compromised. While such chains may offer lower friction initially, their loose tolerances ultimately lead to lubricant loss, premature wear, and increased friction in the long run. EK Quadra-X Ring chains combine reduced friction and long wear - lab tests show that they last 50 percent longer than standard O-ring chains.

EK 520ZZZ - The Ultimate Street Performance Chain

The ZZZ features a revolutionary new sideplate profile that more effectively distributes the load on the sideplate. The result is incredible tensile strength without increased weight. Using the latest computer modeling tools, EK engineers analyzed in detail the shape of conventional chain sideplates. Using this data, they developed a revolutionary new shape that more effectively distributes the loads on the sideplate. The result is a major increase in the ZZZ’s tensile strength without added weight. 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.