D.I.D is the number one motorcycle chain in the world. D.I.D chains are used by factory races teams from all manufacturers in race series everywhere. Pinning your mini out of every turn might tear apart the stock chain, but D.I.D and their 420NZ3 Gold chain will not let you, or your race for first, down. For machines originally equipped with non-O-ring chains. Solid rollers. Shot-peened parts. High cylindrical and roundness accuracy. Exacting tolerances provide low friction. DHA pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance. Pre-stretched. Special alloy steel with extended riveted bushing "anti-kink" design. Highest quality non-O-ring chain in overall combined performance. Up to 19% higher tensile strength; average tensile strength of 4,780 pounds. Wear life index: 410. Weight (per 100 links): 1.81 pounds. Includes a clip-style master link. 120 links. Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use. D.I.Ds exclusive SDH (Super DH) pin treatment is the secret behind the superior performance of the NZ Series chains. This high-tech pin treatment forms an extremely hard chromium carbide layer on the pins surface while maintaining a soft inner core. SDH treated pins have extreme impact strength while maintaining outstanding shock absorption. This treatment creates a chain with anti-oxidation properties and superior wear resistance against invasion of hard foreign materials.
Sunstar Front Sprocket Manufactured from case-hardened chromoly steel for the ultimate in strength and durability. "Parkerizing" surface treatment for rust and corrosion resistance. Sunstar Steel Rear Sprocket Manufactured using only the highest quality 1045 high-carbon steel. Exclusive heat treatment for added strength and wear resistance. Most are zinc plated and have a baked-on durable paint process for corrosion resistance. The strongest, longest lasting steel replacement sprocket available. Sunstar MXR1 Works MX Racing Chain Works non-sealed MX & Off Road racing chain for high performance mini off road bikes. Constructed of 100% heat treated components, featuring Sunstar TripleStar treated ultra hard pins. Extremely strong and lightweight design perfect for mini racers. Seamless roller & bushing construction with a tensile strength of nearly 5,000 lbs.