{"product_id":"rk-excel-bl420mru-120-mru-drive-chain-black-420-x-120","title":"RK EXCEL BL420MRU-120 MRU Drive Chain, Black, 420 x 120","description":"MRU features RK’s proprietary Ultra Thin Seal, U-Rings, where the thickness of the seal is less than 50% of the most common O-ring seal. This allows RK to design a Sealed Chain with the weight of a Non-Sealed Chain. MRU will feature 4 times longer chain life than comparable non-sealed 420 chains and will require less chain adjustments compared to non-sealed 420 chains.\n\u003cp\u003eThe RK EXCEL BL420MRU-120 MRU Drive Chain combines a proprietary Ultra Thin Seal with U-Rings, designed with a seal thickness of less than 50% of the most common O-ring seal. This construction allows RK EXCEL to offer the weight characteristics of a non-sealed chain while providing the benefits of a sealed chain design.\u003c\/p\u003e\u003cp\u003eAccording to RK EXCEL, the MRU chain delivers four times longer chain life than comparable non-sealed 420 chains and requires fewer chain adjustments compared with non-sealed 420 chains. The chain is rated for applications up to 150cc on both street and off-road use, with a maximum horsepower rating of 25 HP.\u003c\/p\u003e\u003cp\u003eThe RK EXCEL BL420MRU-120 features a tensile strength of 4,540 pounds, a maximum chain width of 17.1 mm, and a weight of 1.74 pounds. A clip-type master link is included.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUltra Thin Seal: Uses RK EXCEL's proprietary U-Ring seal with a thickness of less than 50% of the most common O-ring seal.\u003c\/li\u003e\n\u003cli\u003eChain Life: Designed to provide four times longer chain life than comparable non-sealed 420 chains, according to RK EXCEL.\u003c\/li\u003e\n\u003cli\u003eChain Adjustments: Requires fewer chain adjustments compared with non-sealed 420 chains, according to RK EXCEL.\u003c\/li\u003e\n\u003cli\u003eTensile Strength: 4,540 lbs.\u003c\/li\u003e\n\u003cli\u003eApplication Rating: Maximum 150cc rating for street and off-road use.\u003c\/li\u003e\n\u003cli\u003eMaximum Horsepower: 25 HP.\u003c\/li\u003e\n\u003cli\u003eMaximum Chain Width: 17.1 mm.\u003c\/li\u003e\n\u003cli\u003eMaster Link: Clip-type master link included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"RK EXCEL","offers":[{"title":"Default Title","offer_id":68126172151993,"sku":"691-1801BK","price":196.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.thespeedshopusa.com\/products\/rk-excel-bl420mru-120-mru-drive-chain-black-420-x-120","provider":"THE SPEED SHOP USA","version":"1.0","type":"link"}