Utilizes Sunstars exclusive TG-ring (TripleGuard) where the ring seals with 3 lips per side for the ultimate in heat prevention and keeping the chain lubricated even in extremely harsh conditions. The 520RTG1 is the perfect choice for racing / performance oriented applications with 520 chain size. With a tensile strength of 9900 lbs, the 530RTG1 is intended for the large displacement sport machines like Ninja 1400, GSX1300R Hayabusas and others.