They’ve also been impressively airtight overnight and over time.Stay tuned for our in-depth review of the Di2 GRX components, long-term review of SRAM AXS eTap Red, and initial review of SRAM AXS eTap Force and Eagle.For less than just one race entry fee, you can get months of ‘cross bliss, without the suffering.Shimano’s gravel-oriented GRX mechanical components include a 1x and 2x rear derailleur. It did the job without complaint or issue, and I likely wouldn’t have noticed until I asked Shimano’s Nick Legan why his bike had oversized pulleys while mine did not. Shifting may not be optimal, but it’s certainly possible.What makes a GRX derailleur 1x or 2x? The crankset and chain rings are spaced 2.5mm further out than the Ultegra equivalent. $69.99. The 817/812 rear derailleurs support up to 42T where Ultegra maxes out at 34T similar to the 815/810. It shifted well but was more challenged with chain wrap duties. © A. Yee / Cyclocross MagazineThe wheels follow Shimano’s long history of using easily adjustable and serviceable cup-and-cone bearings and avoiding easily-gouged alloy freehubs. $82.99. It isn’t a reworked set of road components. Just choose Standard Shipping during checkout.Jenson USA ships worldwide, including APO/FPO addresses. The RD-RX810 rear derailleur is compatible with road cassettes with a 34T low sprocket max. That’s a big bummer.Inline brake levers were all the rage before hydraulic disc brakes. Shimano is the undisputed king of mechanical drivetrains and the new GRX RX810 is awesome. That extra leverage comes in handy on singletrack descents. Mine got a little loose and getting the shifting dialed in was vexing until I thought “let me check the bolt.” Sure enough, it was a little loose. Due to a mix-up, our test bike came with a 1x derailleur paired with the 2x crankset. Bottomline, for 2x you need the RX-810 derailleur (RX-815 for Di2), with a larger 40T capacity (yeah!) And, if the off-the-shelf bike is decked out with it, you'll be stoked. Shimano Ultegra CN‑HG701 11‑Speed Chain. We feature a small staff of savvy, experienced writers who love to review outdoor gear.It's been so good to get on a Shimano mechanical drivetrain. I experienced reliable, fast shifting under all terrain. Updated July 21, 2020. That passion is channeled into every article or gear review he writes. And, as a PSA, don’t forget to check the rear derailleur bolt every so often — this is particularly important with gravel bikes. SHIMANO GRX - Hydraulic Disc Brake - DUAL CONTROL LEVER - 11-speed The SHIMANO GRX DUAL CONTROL LEVER delivers light and responsive shifting for mixed-terrain riding. Shimano Ultegra CS‑R8000 11‑Speed Cassette. There are 40t and 42t chain ring options. Shimano GRX ST‑RX810‑LA Dropper Lever Hydraulic Disc Brake Set Left. These spindles are 2.5mm shorter per side, negating the wider stance of the GRX crank.The 48/31 double chain ring combination offers an impressive range of gearing on any cassette, and paired with the 11-34 cassette, serves up a low and high gear that should be sufficient for almost any terrain you encounter.Shimano’s gravel-oriented GRX family of components include hydraulic flat mount disc brakes. It isn’t a reworked set of road components. When in the drops, braking power increases exponentially. However, I’m thankful for the mixup, as it revealed the effectiveness of the Shimano clutch, as the 1x derailleur handled shifting duties without a chain drop, even though the drivetrain was 9 teeth over the derailleur’s stated capacity.Cyclocrossers rejoiced when Shimano also announced its 1x option with the GRX groups.