{"product_id":"tk-02-07-0138","title":"Drive Chain Gold \u0026 Black 420-100L (STD) KSR110\/Monkey R\/Magna 50\/Jazz\/CD90","description":"By increasing the thickness of the link plate compared to standard products, the strength is increased by approximately 1.2-1.3 times (SP Takegawa ratio).\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, causes vibration and noise, and shortens chain life.\u003cbr\u003e\nIn such cases, D.I.D.'s developed SDH treatment proves its effectiveness.\u003cbr\u003e\nSDH treatment forms a very hard film on the surface of the pins, and this film has even higher hardness carbides dispersed within it.\u003cbr\u003e\nTherefore, even if hard foreign particles enter between the pins and bushes from the outside, it prevents chain wear.\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 bush that occurs when it is pressed into the link plate, forming an optimal contact bearing surface between the pin and bush.\u003cbr\u003e\nChain size: 420\u003cbr\u003e\nColor: Gold \u0026 Black\u003cbr\u003e\nNumber of links: 100 links\u003cbr\u003e\n*The image is for illustrative purposes only, and the design and specifications of the products shown may change without prior notice. Please understand.","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":45581776519403,"sku":"tk-02-07-0138","price":7509.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-02-07-0138.jpg?v=1719897309","url":"https:\/\/bikeman.jp\/en\/products\/tk-02-07-0138","provider":"バイクマン","version":"1.0","type":"link"}