The REGINA 525 ZRT drive chain, part number 137ZRT/011, is engineered for high-performance motorcycle and ATV applications. Featuring patented Z44 sealing rings, this chain significantly enhances wear resistance and performance, making traditional X-ring and Z-ring chains outdated. The design achieves a 50% reduction in friction compared to conventional O-ring chains, resulting in smoother operation and improved efficiency. The chain is equipped with a special high-temperature grease that ensures constant lubrication in the critical pin and bushing areas, which contributes to a longer service life and reduced maintenance needs. High-carbon alloy pins are used to minimize wear, while increased roller thickness adds to the overall durability, providing reliable performance under demanding conditions. Thicker outer plates and quad-riveting techniques deliver greater tensile strength, ensuring the chain maintains integrity during intense riding or heavy loads. A rivet-type link is included, simplifying installation and maintenance. This chain is designed to withstand the rigors of off-road and street riding, offering an optimal combination of strength, longevity, and performance for your motorcycle or ATV. Features: * Patented Z44 sealing rings for enhanced wear life and performance * 50% reduction in friction compared to traditional O-ring chains * Constant lubrication with high-temperature grease in critical areas * High-carbon alloy pins to minimize wear and extend chain life * Increased roller thickness for added durability * Thicker outer plates and quad-riveting for greater tensile strength * Includes rivet-type link for easy installation and maintenance