Wait, you put grease where the instructions told you to, right? Good.Įmbargo timing meant that I haven't put in a ton of miles on the new cassette, but I did pair the 12-speed, 9-50 tooth block with three different drivetrains to see if e*thirteen's claims of cross-compatibility hold true: SRAM's wireless Eagle AXS XX1 and cable-controlled XX1 systems, as well as Shimano's XTR drivetrain. Next, thread the 3mm hex screw (3Nm again) into place and you're ready to roll. Turning the steel section to the right sees fins machined into its backside interlock with the aluminum section, and there's a tiny image of a padlock for you to line up and make sure it's done correctly.
The two halves of the Helix R cassette interlock, and there's a 3mm hex key to ensure everything stays put. That rather tiny gap is why you can use a 12-speed SRAM cassette with a Shimano derailleur and shifter or vice-versa and have it be close to bang-on, even if they'd rather you didn't. To give you an idea of how tight it is down there, a SRAM shifter moves the cable roughly 0.15mm more than Shimano does, or about the thickness of a piece of paper. Now that we're squeezing way more cogs into the same amount of space between the spokes and dropout, there's not much difference between SRAM or Shimano's 12-speed cassettes when it comes to where the cogs are sitting. The hollowed-out steel section that makes up the rest of the cassette should last much longer, but you can also buy it on its own for $159 USD. Orange, purple, black, or bronze will cost $129.95 USD on their own, or there's a $159 USD, PVD-treated blue option that's said to offer " double the durability compared to anodizing.'' We'll be putting that one on a long-term test bike. The Helix's two-piece design means that e*thirteen can sell the larger, faster-wearing aluminum cogs separately. I'll let you dig up the numbers for the comparable SRAM and Shimano 11-speed bits. It retails for the same $289.95 USD, and e*thirteen says that it weighs 325-grams. There's also an 11-speed version (available early December) of the Helix R cassette that gets 9, 11, 13, 15, 17, 20, 24, 28, 33, 39, and 46-tooth cogs for a 511% range. With 9-tooth small and 50-tooth big cogs, the 12-speed Helix R is the range champ.
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