{"product_id":"tk-02-07-0131","title":"Drive Chain Gold \u0026 Black 420-74L Z50J(12V)\/AB27\/Monkey Baja","description":"By making the link plate thicker than the standard product, 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 cause of chain stretch is wear between the pins and bushings.\u003cbr\u003e\nWhen fine, hard, harmful particles such as sand or dust get between the pins and bushings, it accelerates 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 pin, and this film has even harder carbides dispersed within it.\u003c\u003cbr\u003e\nTherefore, it prevents chain wear even if hard foreign particles get between the pins and bushings from outside.\u003cbr\u003e\nSolid Bushing\u003cbr\u003e\nThis is a roller chain with excellent wear resistance that adopts a highly rigid solid bushing 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 press-fitted 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: 74 links\u003cbr\u003e\n*The image is for illustrative purposes only, and the design and specifications of the products shown may change without notice. Please understand.","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":45581776027883,"sku":"tk-02-07-0131","price":5606.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-02-07-0131.jpg?v=1719897288","url":"https:\/\/bikeman.jp\/en\/products\/tk-02-07-0131","provider":"バイクマン","version":"1.0","type":"link"}