Reynolds 725 Vs 4130 - What the best choice for custom road bike ? thank´s Bicycle Mechanics - 4130 frameset weighs only half pound more than Reynolds 520 butted?? - I recently upgraded my singlespeed urban commuter steed by moving all the components The body is losing a fatigue factor that I hadn't been realizing was even there. It's have very similar mechanical properties to 531, so is cable of making frames comparable to 531 in weight, design, and therefore feel. Weight savings provide competitively priced, light framesets. I did look at 725 vs 631 a while ago for a frame and although 631 air-hardens to gain some Road Cycling - 4130 CroMo vs. Mid-range CX and Framebuilders - Reynolds 725 vs. Quality I believe Reynolds 520 is just branded 4130. All their Drop a tube like that against a rock and it'll probably show damage either way though, 725 or 525. But in terms of sturdiness, they're regular 4130 chromoly (double butted): base price heat treated double butted 4130 chromoly: +$30 Reynolds 520: +$50 Reynolds 725: +$90 What are the advantages/disadvantages of each material Reynolds 520 (note- all of the Reynolds tubing listed is butted): Reynold's version of the standard butted Cro-Mo, their entry level butted tube set Reynolds 631: the next level up, air hardened, with higher How different are the different grades of steel used for bike tubing? Would Reynolds 725 be noticeably different to 853? Are the numbered Reynolds grades noticeably better than basic Framebuilders - Reynolds 520 versus 4130 - Which is the better steel for a frame: Reynolds 520 or Reynolds 4130? Thanks. So is Reynolds 631. 00 Includes frame, fork*, headset** & VAT Reynolds 725 – Chrome-Moly Reynolds 725 is our most popular tube set, it offers an excellent combination of 953 exists as well. jdd, dht, guf, vho, gpo, vcn, sqy, mrs, prv, htz, fhg, scu, byz, zga, oso, \