• BikeMaster 520 BMOR Series O-Ring Chains offer some of the highest durability at fractions of the price of other brand chains that claim they are stronger. Specially controlled heat treatment means tougher material which keeps you riding longer. Features
    • Up-graded BikeMaster O-ring chain offers chain offers not only the industry's best value-price but also the highest durability
    • Includes Clip style master link and Rivet Style master link
    • Tensile Strength of 8,000 lbs
    • 650cc max street/dirt use
    Note: This chain is 100 links long and must be cut for use on the RD250/350 which requires the chain to be modified to 92 links, and 96 links for the RD400. Optional chain length modification service available, purchase here on on the site under the chain category.
  • Chain - Yamaha RZ350 - DID High Performance 520 Chain for RZ350. DAI-HARD (DHA) SERIES NZ AND NZ3 NON O-RING CHAIN. D.I.D.’s professional high-performance non O-ring roller chain. DHA pin treatment – hard chromium-carbide layer formed on pin surface. Far better wear resistance than other chains. Up to 19% higher tensile strength. Increased anti-oxidation performance. Solid bushings, quad-riveted pins Note: This chain is 110 links long and must be cut for use on the RZ350 which requires a 106 link chain. Optional chain length modification service available, purchase here on on the site under the chain category.
  • Chain length modification service by Economy Cycle. We will professionally modify any chain to your specified length/number of links. Simply choose the number of links you require. We do not simply cut the chain, the plates/pins (links) are removed and the chain will come ready to install. Choose number of lengths and click add to cart.
  • DID ERT3 (supersedes ERT2) 520 Race Chain - Yamaha RZ350 and RD 520 Conversion - Gold. High-performance, lightweight, low-friction chains designed exclusively for racing. This is basically the same chain as the older ERT2, but now with larger and stronger pins. Pins for ER chains are put through a special patented heat-treatment process that is 1.5 times harder than conventional carbon heat treating. Provides the highest wear resistance, tensile strength and impact resistance available. ER chain used by top motocross OEM works teams. Distinctive gold-plated finish. This chain can also be used for the 520 conversion on RD's. Note: This chain is 120 links long and must be cut for use on the RZ350 which requires a 106 link chain. The stock RD250/350 requires the chain to be modified to 92 links, and 96 links for the RD400. Optional chain length modification service available, purchase here on on the site under the chain category.
  • DID Standard Series 520 roller chain. Available in multiple lengths. This is an excellent medium grade chain, pre-stretched, anti-kink design, includes clip style master link. This chain is used on the RZ350 and for the RD250/350/400/R5 520 Conversion. Made in Japan. Choose Length and add to cart. Length for reference: R5/RD350/RD250 - 92 Links RD400 - 96 Links RZ350 - 106 Links