Regina 136ZRT/150 530ZRT-150 DL Gold Chain: Automotive. Buy Regina 136ZRT/150 530ZRT-150 DL Gold Chain: Chains - ✓ FREE DELIVERY possible on eligible purchases. ZR chains are the best choice for the most severe and demanding applications thanks to thicker outer plates and quad-riveting for greater tensile strength . Constant lubrication from special high-temperature grease in the critical pin/bushing area provides long life and a 50% reduction in friction compared to traditional O-rings . Patented "Z" ring section. The Z-ring flexes when assembled, creating a spring effect that guarantees the seal will not diminish over time . New generation seal rings, which feature a special-designed conical shape on their inner side, are the result of the evolution of previous X-ring and Z-ring designs . Ideal for Sport bikes from 600cc to 1000cc. 110 Links . The company was founded in , initially manufacturing chains and free wheels for bicycles. The production of motorcycle chains began in , bringing early success and victory after victory ever since. Over a period of more than 90 years, many trophies in every discipline and category, both road and off-road, were won, resulting in more than 325 world championship titles. But the biggest success is using the races as a testing ground for ultimate product and technology development, resulting in exclusive patents: Z-ring, Chromized pin, shaped bushing, and many more. Applying these technologies to series production makes the real difference between and all others. Each chain, type by type, category by category, provides the ideal performance for all types of motorcycle or ATV riding. A complete range of increasingly advanced and innovative chains, as part of an enduring quest for two fundamental requirements: maximum functionality and complete safety. ZRT chains are designed for tourist road use. These chains ensure high mileage with reduced elongation thanks to the seal. Assembled with solid bushings and rollers, shot peening of plates, pins and rollers to increase the fatigue resistance. Submitted to performance enhancing pre-stretching. . . .