Reynolds 853 oversized tubing. 725 is a heat-treated chromoly alloy, which pairs nicely with 853. com. Available in a range of lengths up to 850mm, diameters up to 44. The thicker end sections with thinner mid-sections help reduce or eliminate the gussets normally required to pass the stringent EN fatigue testing standards. . Note: 853 tubesets are supplied with 725-series seatstays. Explore the advantages of strength, durability, comfort, and repairability, along with an overview of various Reynolds tubing models like 520, 631, 725, 853, and 953. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Reynolds Technology Ltd. Head tubes and BB shells for 853 tubesets are available in 525, 631, or 853-series, depending on size, and are noted in the dropdowns below. 2mm and a wide range of butt profiles 853 finds a home in the rowdiest of mountain bikes and the most responsive of road and gravel bikes. Get the best deals for Reynolds 853 Tubing at eBay. Top tubing has a problem in that the Yield Point is often very close to the UTS (see example above) so that if you deliberately try to bend it (or 'cold-set'), for example to fit a wider rear axle or straighten a bend, the steel may well break - it's 'brittle'. of Birmingham, England, holds the original 1898 patent for the butted (variable wall thickness) cycle tube and continues the innovation today with ultra high strength metals. 853 is an air-hardening steel. We use Reynolds DZB, Double Zone butted tubes, which are particularly suitable for ATB and 29'er frames. tuoc qbwsb mvp dfmk yktpf fzgr qdlurvg ewb kve umhi