{"product_id":"tk-02-07-0132","title":"Drive Chain, Gold \u0026 Black, 420-76L (NZ3), Z50J (6V)","description":"By increasing the thickness of the link plate compared to standard products, the strength is increased by approximately 1.2-1.3 times (compared to SP Takegawa).\u003cbr\u003e\nFurthermore, it is the strongest drive chain in the 420 series, equipped with SDH treatment and solid bushes.\u003cbr\u003e\nSDH Treatment\u003cbr\u003e\nThe cause of chain elongation is wear between the pins and bushes.\u003cbr\u003e\nWhen fine, hard, harmful particles such as sand and dust enter between the pins and bushes, it promotes chain wear, causing vibration and noise, and shortening the chain's lifespan.\u003cbr\u003e\nIn such cases, the SDH treatment developed by D.I.D demonstrates its effectiveness.\u003cbr\u003e\nSDH treatment forms a very hard film on the surface of the pins, and this film has even harder carbides dispersed within it.\u003cbr\u003e\nTherefore, it prevents chain wear even if hard foreign particles enter between the pins and bushes from the outside.\u003cbr\u003e\nSolid Bush\u003cbr\u003e\nThis is a roller chain with excellent wear resistance that uses highly rigid solid bushes with a seamless, smooth surface and excellent roundness.\u003cbr\u003e\nSolid bushes reduce the barrel-shaped deformation of the bushes that occurs when they are pressed into the link plates, forming an optimal contact bearing surface between the pins and bushes.\u003cbr\u003e\nChain size: 420\u003cbr\u003e\nColor: Gold \u0026 Black\u003cbr\u003e\nNumber of links: 76 links\u003cbr\u003e\n*The image is for illustrative purposes only, and the design and specifications of the products shown are subject to change without notice. Thank you for your understanding.","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":45581776126187,"sku":"tk-02-07-0132","price":5711.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-02-07-0132.jpg?v=1719897291","url":"https:\/\/bikeman.jp\/en\/products\/tk-02-07-0132","provider":"バイクマン","version":"1.0","type":"link"}