{"product_id":"tk-02-07-0134","title":"Drive Chain Gold \u0026 Black 420-86L XR70R","description":"By making the link plates thicker than standard products, the strength is increased by approximately 1.2-1.3 times (compared to SP Takegawa).\u003cbr\u003e\nFurthermore, this is the strongest 420 series drive chain, equipped with SDH treatment and solid bushings.\u003cbr\u003e\nSDH Treatment\u003cbr\u003e\nThe main cause of chain elongation is wear between the pins and bushings.\u003cbr\u003e\nWhen fine, hard, harmful particles such as sand and dust enter between the pins and bushings, chain wear is accelerated, leading to vibrations, noise, and a shortened chain lifespan.\u003cbr\u003e\nIn such cases, the SDH treatment developed by D.I.D comes into its own.\u003cbr\u003e\nSDH treatment forms an extremely hard film on the surface of the pin, and this film contains even harder carbides dispersed within its structure.\u003cbr\u003e\nTherefore, it prevents chain wear even if hard foreign particles enter between the pins and bushings from outside.\u003cbr\u003e\nSolid Bushing\u003cbr\u003e\nThis is a roller chain with excellent wear resistance that uses highly rigid solid bushings with a seamless, smooth surface and excellent roundness.\u003cbr\u003e\nSolid bushings reduce the barrel-shaped deformation of the bushing that occurs when it is pressed into the link plate, forming an optimal contact bearing surface between the pin and bushing.\u003cbr\u003e\nChain Size: 420\u003cbr\u003e\nColor: Gold \u0026 Black\u003cbr\u003e\nNumber of Links: 86 links\u003cbr\u003e\n*Images are for illustration purposes only. The design and specifications of the products shown may change without prior notice. Please be aware of this.","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":45581776257259,"sku":"tk-02-07-0134","price":6557.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-02-07-0134.jpg?v=1719897298","url":"https:\/\/bikeman.jp\/en\/products\/tk-02-07-0134","provider":"バイクマン","version":"1.0","type":"link"}