As with the derailleurs, theres no direct 105-equivalent, so the choice is Ultegra-level RX810 calipers or, as I have here, Tiagra-level RX400s. Oh but wait, theres more. A torque wrench is a useful tool to have if you want to properly maintain your road bike or MTB. a clutch which resists forward movement of the derailleur cage, reducing the tendency for the chain to bounce around. There are two types of disc brakes for road bikes, mechanical and hydraulic, but the mechanical type, which physically closes the caliper by pulling the wire, and the hydraulic type, which closes the caliper by the difference in pressure of the oil filled in the hose, have different structures and cannot be used together. While all GRX levers (including 10-speed RX400) have built-in reach adjustment, only the top-level RX800 series levers (mechanical and Di2) have free-stroke adjustment. Shimano uses mineral oil as a braking fluid, and both OEM (original equipment manufacturer) and aftermarket bleed kits are widely available. This alters the lever feel with more progression. The Ultegra-level GRX RX810 derailleur is very similar to Ultegra RX, whichcame before it, with only slightly tweaked specs. Like most sites we make a small amount of money if you buy something after clicking on one of those links. Mixing and matching components is an endless topic as drivetrain manufacturers continue to progress their respective technologies. Mix and match components to customize your bike for. Thus, you could put on an XT or XTR 11-34 10-speed cassette to get her some lower . Now with the GRX line Shimano has made a clear distinction between technology intended for paved and unpaved roads. The one exception to this is Shimano, who to this day has never produced an XD freehub body for its own wheels or hubs. The introduction of 11-speed road cassettes required a new freehub with the same spline pattern as Shimano HG, but an extra 1.85 mm of length to accommodate the additional sprocket (now measuring 36.85 mm). In this issue, we will look at the differences between 700C and 650B, and the advantages and disadvantages of each. It isn't a reworked set of road components. The RD-RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Shimano GRX cranks use a four-arm spider to match existing options. This freehub fits 7, 8 and 9-speed Shimano and SRAM cassettes, regardless of whether the cassettes are for road or mountain biking. Meanwhile, most other hub brands (depending on the age) offer the ability to change the freehub body fitment type. Shimano GRX components are designed specifically for the needs of gravel, adventure and all-road riding, with gearing and features that differ from the brands road ranges. There is no GRX 400 series chainset. 2. INFORMATION Unlike past groups with short- and long-cage options, there is just a single Dura-Ace . The following STI levers for road use are compatible with GRX components. Matthew Loveridge (formerly Allen) is BikeRadar's former senior writer, an experienced mechanic, and an expert on bike tech who appreciates practical, beautifully-engineered things. Shimano OT-RS900 GRX, Dura-Ace Shift Cable Housing for Rear Derailleur (Y0BM98011) Out of Stock View. This means that you can often use one of these 11-speed cassettes on either a mountain bike wheel or an older road wheel. It also reduces chain slap, improves chain retention and minimizes the risk of clipping obstacles. You've been subscribed to our newsletter. The first step is to count your cassettes number of sprockets (gears). CS-HG50-10. This helps keep them cool, maintaining the braking performance. Shimano GRX also includes 1x11-specific BL-RX810 and BL-RX600-series left side hydraulic disc brake levers with no dropper or shift internals. TPI, Compound, Tread? Visit our tours page for related adventures. As of mid-2018, SRAM has introduced NX Eagle groupset, that includes 12 speed cassettes compatible with Shimano (and SRAM) standard freehubs (for 8, 9, or 10 speed cassettes). All GRX STI levers are hydraulic disc brake only, STI levers for road compatible with GRX components, Compatibility with various components for road bikes, Compatibility of GRX with DURA-ACE for road bikes, Compatibility of GRX with ULTEGRA for road bikes, Compatibility of GRX with 105 for road bikes, Compatibility of the GRX with TIAGRA for road use, ST-R9120ST-R8020ST-R8025ST-R7020ST-R7025ST-RS685ST-RS505, Road components that can be combined with GRX for gravel, DURA-ACE R9050 series => Compatible with GRX Di2, DURA-ACE R9000 series, 9000 series => compatible with GRX 11, ULTEGRA R8050 series => compatible with GRX Di2, ULTEGRA R8000 series, 6800 series => compatible with GRX 11, 105, R7000 series, 5800 series => compatible with GRX 11, compatible with TIAGRA 4700 series => compatible with GRX 10. Crappy wheels and a old school stem, and not particularly light. You have the GRX tubeless-ready wheelset and the cyclocross brakes, to name a couple. I'm torn between which of the GRX derailleurs I need to buy. The flat mount brake calipers (BR-RX810 pictured) are the same design as the current road calipers but with GRX logos so they come with features like one-way bleeding and Shimano's Ice Technologies heat-dissipating finned brake pads and rotors. "The proven clutch-style rear derailleur and Shimanos patented chainring tooth design ensured the chain stayed in place over the roughest tracks. Props to SRAM for keeping this consistent. The Shimano compatibility documentation gives the official answers The RD-RX800 is compatible with all the 11 speed road shifters The RD-RX812 is compatible with GRX levers only, but that is because the RX-RX812 is for 1x setups, only the GRX range has 1x levers, with the left unit being a brake lever only. After buying a new road bike, you will have the option to combine your original road bike with GRX components to make it a gravel bike, which will broaden the range of ways to enjoy your bike. The mid-level Shimano gravel groupset is an 11-speed mechanical groupset that permits a choice of 1x or 2x setups. When trying to change tire thickness on a road bike or other sport bicycle, it is important to know what tire size the wheel will allow. If you're in the market for a new gravel bike or want to replace your current drivetrain completely, a full GRX groupset is an ideal place to start. If youre coming from an older groupset, youll need a small adaptor in addition to the standard Shimano bleed cup that you fill with fluid at the lever. Get a tougher gear on Shimano GRX, 11-34T, 2x11. This means that many older pre-11-speed Mavic freehubs are ready to accept everything from 8-12 speed HG-fitment cassettes, including 11 and 12-speed Shimano road. Modified at: The following is a summary of SRAM's proprietary XD and XDR standards, what makes them different from Shimano's, and what to look for when purchasing. The finish is definitely better suited to the rigours of gravel riding than that of the road groupsets. Dave Arthur said, "Its just a shame Shimano wasnt a little braver in offering a game-changing groupset to serve as a serious riposte to its rivals and offer the low and wide-range gearing that many people flocking to gravel bikes want.". We can certainly see many situations when this would be useful cyclocross and the cobbled classics, for instance. SRAM XD freehub bodies will only work with SRAM 11 and 12-speed mountain bike cassettes that feature a 10T smallest sprocket (this includes the 10-42T 11-speed cassettes marketed for gravel and cyclocross use). Thanks! Pay attention to the capacity of the rear derailleur. I finished 3rd in Tour de Romandie and got a Stage win in the process. (Your choice will be dictated by your frameset.). For this reason the front mech must be used with the matching GRX chainset (see above) which is similarly pushed outward from the frame by 2.5mm. Thing is, that . Both the RX810 mechanical front derailleur and the RX815 Di2 front derailleur (pictured above) have the capacity to accommodate a 17-tooth difference between chainring sizes (as found on a 48/31-tooth GRX chainset) while the RX400 10-speed front derailleur accommodates the 16-tooth difference between the RX600 chainset's 46/30-tooth chainrings. When using GRX brakes, only hydraulic brake-compatible models of STI levers for road use will be compatible, since GRX has only a lineup of hydraulic disc brakes. 1. INFORMATION Next, count how many teeth the smallest sprocket offers. By comparison, SRAMs 11-36T 11-speed cassettes (PG-1170) are a pure road product and therefore require an HG-11 freehub body. You can expect to see bikes with similar specs starting at around 1,600 / 2,000 / $2,000 / AU$3,000, but bike pricing is in flux at the moment, so thats a moving target. And as a reminder, there are a number of wheel companies that employ DT Swiss rear hub internals that could be changed to an N3W freehub. Even with tubeless and tubeless ready tires, punctures cannot be reduced to zero. Originally a roadie, he likes bikes and kit of every type, including gravel bikes and mountain bikes, and he's tested a huge variety of all three over the years for BikeRadar, Cycling Plus, Cyclist.co.uk and others. A freehub is a part of the rear bicycle hub and serves two key functions. Campagnolo has long used its own tall-spline freehub variant, something that in its current iteration dates back to its introduction of 9-speed gearing. If your needs change, it's likely you'll find a compatible alternative for a component at a decent price. That covers the high level layout of the group. What is the ASTM standard for bicycle wheels? Long cage derailleurs are available for both mechanical and Di2 groups. For a long time, picking a freehub body was as simple as deciding between Shimano or Campagnolo, but sadly, things are no longer so simple. It is possible to upgrade your rim brake bike with select GRX drivetrain components; however, you must use Shimano road shift/brake levers designed for rim brakes. The key difference between the GRX 800 chainsets and the GRX 600 chainsets is that GRX 800 uses Shimano's Hollowtech II hollow crank arm technology to reduce the weight. The availability of N3W-compatible wheels is improving all the time. Below is a list of the most commonly found freehub bodies on the market today. capacity. MANUALS & TECHNICAL DOCUMENTS Shifting is mechanical only. Shimanos GRX gravel components are derived from road bikes, so they are highly compatible with road bike parts. NEWS You can't have a complete RX600 groupset because there's no such thing as an RX600 rear derailleur, for instance; if you want an 11-speed mechanical rear derailleur you need to go for RX800 level. Probably not. Shimano hasnt exactly developed an entirely new groupset. Shimanos front shifting is pretty much the best out there, and GRX is no exception in this regard. If you're using a 10-speed system, you need the RD-RX400 which can cope with a maximum 36-tooth sprocket. Like Shimanos HG freehub, Campagnolos freehub was also limited to an 11T sprocket as the smallest size. A key change is the higher braking pivot which makes braking on the hoods easier. On the 1 front, Campagnolos 13-speed Ekar groupset has the edge. GRX is currently in very short supply because of the same factors that are making many bikes and bike parts hard to find. COMPONENT But I'm not taking bets. Specifically, the drivetrain is basically officially compatible with the last two generations of components with the same number of steps. With the addition of a 1.85 mm washer behind the cassette, the 11-speed freehub bodies are backward compatible with the full list of cassettes covered above in HG Mountain.. DISCONTINUED PRODUCTS, SHIMANO SERVICE CENTERS | MANUALS & TECHNICAL DOCUMENTS | DISCONTINUED PRODUCTS, Privacy Policy | Cookies Preferences | Terms of Use | California Transparency in Supply Chain Act | ADA Compliance | California Consumer Private Notice. Here's some more information on how road.cc makes money. Get access to more than 30 brands, premium video, exclusive content, events, mapping, and more. No. Tubeless tires have seen a dramatic increase in the number of users over the past few years. "Shimano has spent a lot of time studying the demands of riding a drop bar bike off-road on challenging terrain. 9. Cassette removal and installation tools required for SRAM XD are identical to those used for Shimano HG, Microspline and EV-style freehub bodies. Inside, outside serrations? I have a tendency to mark cranks with my heels-in pedalling style, but perhaps partly because of its shape the RX600 cranks finish has proved resilient through heavy-duty muck. I used a kit from Epic Bleed Solutions when I built my test bike up and had no complaints.
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