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It isnt a reworked set of road components. Introduced with XTR 12 speed, Microspline is Shimanos answer to fitting a smaller 10T sprocket onto a freehub body. We have compiled a list of points to note when choosing a wheel. In practice, the range of free-stroke adjustment available is quite small, and I didnt miss it with the cheaper levers. Campagnolo also offers an adapter kit (#AC21-N3W) that allows older 9-12-speed Campagnolo cassettes to fit an N3W freehub. This is the identical size spacer that is used for spacing down Shimano HG 11 freehubs even the splines match. What is a tubeless valve, tubeless valve types, and how to select one are summarized below. 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. Shimano recently updated its compatibility chart . Does it offer any branding? ", Explore the complete archive of reviews of groupsets on road.cc. Those chainring options can be paired to an 11-30, 32, or 34 tooth cassette. Its equipped with an on-off switchable chain stabiliser i.e. 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.". Firstly, it performs the ratcheting duty, allowing the cassette to stay stationary while the rest of the hub can spin freely so you can coast. 11-speed mechanical Options for multiple handlebar positions allow you to brake with confidence in all conditions. GRX is highly compatible with road-compatible components, Points to consider when combining with components for road bikes, Combine parts with the same number of speeds. To fit it into your bike without side to side movement you will have to add 2.5mm spacer ring behind each bearing cup. Better yet, it's all inner compatible, so you can mix and match. What is SRAM's XDR and XD? Tiagra 4700 shifters are compatible with GRX RX400 derailleurs (front and rear), but apparently 105 5700 and Ultegra 6700 shifters are not. Shimano Microspline freehub bodies are only compatible with Shimano 11 and 12-speed mountain bike cassettes that feature a 10T smallest sprocket. Freehub bodies are almost always replaceable, but not all hub/wheel brands offer all types of freehub bodies. Tubeless is reassuring to have! It represents a ground up look at how cyclists want to explore their world. The first step is to count your cassettes number of sprockets (gears). But gravel riding isnt a new concept. Difference between 700C and 650B, advantages and disadvantages. 111 riders will have. TIAGRA is easy to choose as a 10-speed grade, one step down from the current higher grade of 11-speed, but you need to be careful when choosing components for compatibility. If you're using a Shimano Ultegra or 105-level 11-30/34-tooth 11-speed cassette, you need to use the short cage Di2 RD-RX815 rear derailleur or a mechanical RD-RX810 rear derailleur (pictured above). FEATURES Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping and drops SHIMANO SHADOW RD+ Smooth and reliable mixed surface shifting Switch stabilizer ON/OFF to match the terrain 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. What causes it and how to correct the distortion. GRX is currently in very short supply because of the same factors that are making many bikes and bike parts hard to find. However, there are times when it is easy to raise the bead, and other times when it does not raise at all despite your best efforts. My test bike, a Genesis Croix de Fer 853, which I detailed in a BR Builds article last year, was equipped with the following: Ive also spent a good deal of time riding gravel bikes fitted with both higher and lower spec GRX groupsets, including the likes of the Canyon Grail 6 and Grail CF SL 7.0, and the Enigma Escape, and Ive drawn from the experiences of the rest of the BikeRadar team in writing this review. > It represents a ground up look at how cyclists want to explore their world. What is a Through Axle? For example, Shimano wheels are typically locked into the style of freehub body they were initially supplied with, and the company doesnt offer replacement freehub bodies for use with Campagnolo or newer SRAM cassettes. Initially, the pads move quicker to make contact with the rotor, then later in the stroke pad, speed is traded for increased power and control. RX400 Shimano Tiagra level and 10-speed. Want to drop some weight, simplify your shifting, and still maintain a versatile range? SHADOW Plus revolutionized the mountain bike world and now its been tuned for gravel and rough road riding in GRX. "Shimano has spent a lot of time studying the demands of riding a drop bar bike off-road on challenging terrain. The N3W freehub body features the same spline pattern as Campagnolos previous freehub, but is 4.4mm shorter in length. For example, DT Swiss offers freehub bodies that cater to all current popular drivetrain demands, and (partly) as a result, a number of wheel brands choose to use DT Swiss hub internals. The following is a summary of the causes of punctures and how to deal with them. Years before the first gravel bike was introduced, riders tinkered with cyclocross bikes or touring rigs, creating drop-handlebar bikes with wide tires. We have compiled a list of advantages and disadvantages of hookless, as well as points to keep in mind when choosing. Shimano hasnt exactly developed an entirely new groupset. This setup would also only give you a top gear of 99.3in, falling well short of the 2 drivetrains 46/11 (114in) top end. The following is a summary of the differences and how to select the right one. SHIMANO DEORE - 10-Speed - HYPERGLIDE - 11-36T MTB Cassette Sprocket. It attaches to the top section of your handlebar and connects to the main hydraulic line running to the front and/or the rear caliper to give you a second braking position. The GRX derailleur also comes in two options with a maximum low gear of either 34t or 42t, the larger of which is compatible with MTB cassettes. When mixing GRX and road components, it is necessary to combine parts with the same number of speeds (gears) as a prerequisite. The increased number of sprockets squeezed into the back, plus the introduction of wide-range cassettes with smaller 10-tooth or 9-tooth sprockets, has seen multiple more variants of freehubs hit the market, and things have quickly become as confusing as selecting a bottom bracket for a press-fit frame. Well see you out there! With GRX, Shimano offers both, each with gearing options that allow you to tailor your drivetrain to suit your tastes. 2. We continuously update and republish our guides, checking prices, availability and looking for the best deals. You can also buy STI levers and brake calipers in sets. The first part of the lever travel is very light and the brakes respond instantly, with the progression leading to easier modulation of braking power as the terrain gets rowdier.". 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. We specifically designed the brakes for the often unexpected challenges of gravel riding. Similarly, the cassette is held by a unique size lockring that is not cross-compatible with HG-style cassettes. I regularly asked the groupset to change gear in extreme circumstances, deliberately shifting under load and cross-chaining, but nothing I did invoked any reluctance. Choose between 10-speed and 11-speed, 1x11 or 2x11, and mechanical or electronic shifting. Shimanos components for road bikes are designed for cross-ratio sprockets, so the maximum number of teeth and capacity of the rear derailleur are smaller than those of components for MTB. Our mission is to bring you all the news thats relevant to you as a cyclist, independent reviews, impartial buying advice and more. Sign in to manage your newsletter preferences. Crappy wheels and a old school stem, and not particularly light. GRX was designed from the ground-up to meet the rugged demands of gravel riding and racing. I'd be interested if anybody has tried to take this on the Eurostar, and whether it's possible to get away with it as an item of At almost 6k I'm struggling to see who on earth would buy this. The following is a summary of what a torque wrench is and the advantages and disadvantages of torque management. An XDR freehub body is required to fit 12-speed SRAM Road AXS and XPLR cassettes. The 2 options are excellent though, and at 11-speed level, the option to mix and match with Shimano road groupsets makes piecemeal upgrades an appealing possibility. Impressively, the Campagnolo freehub body has remained relevant to this day and is compatible with all Campagnolo cassettes ranging from 9 through to 12-speed. Go with GRX's 800 series 2x11 RD-RX810 or Di2 RD- RX815 rear derailleurs, designed for close ratio clusters, with 48/31 chainrings and an 11-34 cassette. Some brands are truly great at offering various different freehub body fitments to suit all of the latest drivetrain styles. As far as possible that means recommending equipment that we have actually reviewed, but we also include products that are popular, highly-regarded benchmarks in their categories. All of them use Shimano's Shadow RD+ technology which is designed to stabilise the chain on rough terrain by minimising unnecessary derailleur arm movement. rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world. Component categories and series of GRAVEL, Component categories and series of LIFESTYLE, Component categories and series of E-BIKE, Your smartphone to cycling computer on the bike, SHIMANO bicycle ride data collection/analysis service, SHIMANO AGAINST THE TAMPERING WITH E-BIKES, California Transparency in Supply Chain Act. Cassettes Chains Cranks Pedals Bottom Brackets Hubs Shimano Deore XT CN-M8100 12-speed - HYPERGLIDE+ - SIL-TEC - MTB Chain . A key consideration with gravel and adventure bikes is getting low enough gears, so lets talk gear inches. Mix and match components to customize your bike for. (38/9 gives a healthy 115.4in). No need to switch over to SRAM AXS or go 12-speed, Garbaruk's 11-50T 11-speed cassette and a number of new GRX compatible round & oval 1x chainrings will have you adventuring & bikepacking in no time. BMXs, single-gear, entry-level adult, and kids bikes may still feature freewheels. Shimano OT-RS900 GRX, Dura-Ace Shift Cable Housing for Rear Derailleur (Y0BM98011) Out of Stock View. 10, 2023, Posted at: Derailleur-shifters compatibility Shimano GRX. What is a Tire Insert? Similarly, new Shimano 12-speed road cassettes will fit HG 11 freehubs. Meanwhile, most other hub brands (depending on the age) offer the ability to change the freehub body fitment type. All material FarrellyAtkinson (F-At) Limited, Unit 7b Green Park Station BA11JB. Oh, and who can argue with those anodized colors Garbaruk extended Shimano GRX 11sp derailleur cage c. Garbaruk And lastly, you may consider avoiding the need for a new freehub or cassette by mixing and matching drivetrain components. Paired with 700c x 40mm tires, it delivers a top gear similar to a road bike with 25mm tires and a 50 x 11 gear. Advantages and Disadvantages. Its based on Shimanos familiar Hollowtech II bottom bracket standard, which is available in both threaded and press-fit (BB86) options. There is no GRX 400 series chainset. things smooth, silent and safe with you always in control. Are all Shimano 10 speed cassettes compatible with each other? If you use the Di2 system and fit satellite shifters, you'll be able to change gear with your hands on the tops too. The GRX derailleurs sit further underneath the cassette than traditional road derailleurs they don't extend so far out when you're using the small sprockets. Because the electronic gubbins takes up less space compared to the mechanical components, Shimano has had more freedom to produce a hood shape that feels fantastic in the hand. Types and How to Choose. He looks like he should be better at cycling than he actually is, and he's ok with that. Types and How to Choose. As ever with groupsets, it should be noted that real-world pricing often bears little resemblance to RRPs. Many "hookless rim" wheels are lightweight and cost-effective. What is a tubeless valve? a clutch which resists forward movement of the derailleur cage, reducing the tendency for the chain to bounce around. This will likely be a number between 8 and 12. "The mechanical groupset worked beautifully [and] GRX Di2 is a clean shifting groupset that proved unflappable over three days of riding. Side-by-side with a Shimano 105 road lever, the overall shape and design of the RX600 is very similar, although there are subtle differences, for example in the precise sculpting of the lever blades. The inline hydraulic sub-brake lever (BL-RX812, pictured above) is an interesting option. This freehub fits 7, 8 and 9-speed Shimano and SRAM cassettes, regardless of whether the cassettes are for road or mountain biking. Tags On a freewheel system, that spline will remain stationary when the sprockets are spun backward. > Thanks to its 11-speed specification, much . HOME Mat is a Cambridge graduate who did a post-grad in magazine journalism, and he is a winner of the Cycling Media Award for Specialist Online Writer. 1x and 2x and even 10 speed options. Shimano's GRX series of gravel components can be used in combination with other road bike components, including tips on how to mix and match. Share. Consider the 1x11 GRX option with either Shimanos 11-40 or 11-42 cassette and a 40 or 42-tooth equipped crankset, shifted by a RD-RX812 or Di2 RD-RX817 wide ratio rear derailleur. This section summarizes why disc rotor distortion occurs and how to correct the distortion. This means that you can often use one of these 11-speed cassettes on either a mountain bike wheel or an older road wheel. One more thing to note is that all GRX series STI levers are hydraulic disc brake only. The GRX RD812 says it works with a minimum cassette of 40. When upgrading your gravel bike, keep the following elements in mind to help decipher what parts are interchangeable with your current road components. Gearing for these bikes typically relied on road components, but soon riders started increasing gear ranges by mixing and match road components with mountain bike derailleurs and cassettes. Shimano GRX was designed from the ground-up to meet the rugged demands of gravel riding and racing. This appears to be a coating, and I did manage to inflict some damage on it during testing, but nothing too dramatic. The mid-level Shimano gravel groupset is an 11-speed mechanical groupset that permits a choice of 1x or 2x setups. Is that peak time for drivers or peak time for cyclists/pedestrians? For Shimano products, you can use BR-RS303 or, although not officially compatible with Shimano products, TRPs Spyre can be used with GRX components and mechanical STI levers for road use. Both 6 and 7-speed HG cassettes are narrower in width and therefore can be installed on any of the above HG freehub bodies with the addition of a 4.5 mm spacer behind the cassette. Shimano GRX offers some really appealing options for gravel and adventure riding, but the options are somewhat convoluted because crank and cassette options vary depending on where you are in the range, and which options you choose. a wide range of terrains and ride the way you want! CS-HG50-10. SHIMANO: Using an 11-42 tooth cassette is only possible when running a 1 x 11-speed drivetrain setup. 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. Once set up, shifting is excellent, with surprisingly low effort at the lever and consistent chain pick-up. These wide-range cassettes will not fit any other freehub body, and similarly, no other cassette design (including Shimano 12-speed road) will fit a Microspline freehub body. The latest R8100 series has a 12-speed shifting system, which is currently incompatible with GRX. Get access to more than 30 brands, premium video, exclusive content, events, mapping, and more. Through-axle is becoming a major fixation method for disc brake wheels. GRX groupsets are only available with disc brake calipers and shift/brake levers. 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. TIAGRA componentry is Shimano's top entry grade for road bikes. 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 integrated cable-pulling system is compatible with cable-operated dropper posts with a 9mm lever throw. Mar. In its stock format, only Campagnolo Ekar 13-speed cassettes can fit an N3W freehub. Unlike the road cranks, which feature a closed-off axle, GRX uses an open design, with a hole in the driveside. Shimano GRX mechanical isnt daring, game changing or particularly surprising, its just very good at what it does. (Your choice will be dictated by your frameset.). Shimano has extensive compatibility charts for its components and these show that, with some limitations on gearing options, 11-speed GRX rear derailleurs will work with existing 11-speed road components. I'm torn between which of the GRX derailleurs I need to buy. Component categories and series of GRAVEL, Component categories and series of LIFESTYLE, Component categories and series of E-BIKE, Your smartphone to cycling computer on the bike, SHIMANO bicycle ride data collection/analysis service, SHIMANO AGAINST THE TAMPERING WITH E-BIKES, California Transparency in Supply Chain Act. *When using GRX brake parts, only 105 hydraulic compatible parts are compatible. Instead, there's a RX600 10-speed chainset with 46/30-tooth chainrings. MANUALS & TECHNICAL DOCUMENTS What is bicycle disc rotor distortion? If youre unsure whether your bike features a freehub or freewheel, then take a look at the rear sprockets and give them a backward spin. HOME 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. Mat has been in cycling media since 1996, on titles including BikeRadar, Total Bike, Total Mountain Bike, What Mountain Bike and Mountain Biking UK, and he has been editor of 220 Triathlon and Cycling Plus. No chains were dropped. Like this site? Fast-forward several years and the gravel landscape has evolved rapidly with new gravel-specific frames, wheels, tires, and more hitting the scene. Gravel riding is exploding throughout the cycling community, delivering a sense of exploration and freedom as we venture down unknown roads and seek out new adventures. There are three types of chainset to choose from: 1x11-speed, 2x11-speed, and 2x10-speed (there is no dedicated 1x10-speed chainset). Offering low climbing gears perfect for mixed surface riding, the 11-speed Shimano GRX CS-HG800 cassette is compatible with both 10- and 11-speed freehubs. Shimano EV freehub bodies are only compatible with Shimano 12-speed road cassettes. I suffered no mis-shifts at all, no grinding gears, no evidence that it couldnt cope with grimy riding. This helps keep them cool, maintaining the braking performance. Go to our complete guide to Shimano road bike groupsets for a rundown of Shimano's groupset hierarchy. If youre Shimano-inclined and looking to spec a bike for adventure, gravel or gravel-adjacent activities, it offers a wealth of options to suit different budgets, all of which perform well in the real world and are easy to live with. Equally, I wouldnt turn my nose up at the 10-speed RX400 option, which is excellent in its own right. Cable routing and setup for this style of front derailleur isnt quite as intuitive as it was with previous, simpler designs, so its well worth breaking out the dealer manual and following Shimanos steps to avoid headaches. 1. The worlds first dedicated components for gravel adventure, SHIMANO SERVICE CENTERS It uses the same Shadow RD+ geometry borrowed from mountain bikes, which tucks it under the rear dropout, making it less vulnerable to side impacts. Since the Shimano 105 drivetrain is a 2 x 11-speed group, it is not compatible with an 11-42-tooth cassette, even if you use the GRX RD-RX812 rear derailleur. Both Shimano and SRAM 11-speed road cassettes require this longer 11-speed freehub body. Thing is, that . Shimanos Hyperglide (HG) freehub design has been around since 1990 and remains the most common option in use today. The beauty of the Shimano GRX Groupset is the fact it is compatible with a lot of Shimano components on the MTB and Road Groupsets. COMPONENT We hope this guide is still useful in helping you understand how the GRX range works, and we apologise if the links aren't as useful as we'd like them to be. Shimano wide-ratio sprockets for road bikes are listed here, including compatibility by step number. > The GRX RD810 says it works with a max cassette of 34, but if it's like the Ultegra RX it will fit a 40 just fine. The parts feature innovative ergonomics, gravel-tuned gearing, and loads of options to handle the diverse demands of gravel riding. It's this typically Shimano system-thinking that makes GRX a good investment. Shimano 12-speed mountain bike cassettes are not compatible, either. I didnt feel compelled to fiddle with this (and switching it off has no discernible effect on shifting), but you can actually adjust the amount of friction in the clutch if you want to, via a bolt underneath the outer cover. The idea is that this provides more secure chain retention, reduces the amount that the chain slaps on the chainstays, ensures a quieter ride, and results in an uninterrupted shifting performance. road.cc reviewer Mike Stead tested the GRX RX810 chainset (pictured above) with a 40-tooth chainring and said, "The combination of the [rear derailleur] clutch (see below) and alternating chainring tooth profile meant no matter what I tried, the chain stayed put and was almost totally silent.". Sticking with that tyre as a baseline, 10-speed GRX RX400 actually goes even lower, offering a possible 30/36 low gear, or 22.8in, coincidentally the same lowest gear offered by SRAMs 12-speed Force eTap AXS in a 2 configuration. While this article covers the types of external spline fitments available on freehubs, its critical to note that each brand and model of rear hub is likely to use its own proprietary freehub. Shifting feel is largely defined by the levers and the RX600s are much like their road counterparts, with a light snick from gear to gear thats somewhere between metallic and plasticky. 9. Visit our tours page for related adventures. When something wears out you'll have a load of options for replacement. Similarly, the likes of Garbaruk are now offering Microspline cassettes. ", "No doubt we'll see wider-range rear mechs and 1x chainrings appear, further broadening the scope of terrain and luggage you can tackle without upgrading an entire groupset. On a cassette and freehub system, the lockring spline at the end of the cassette will move with the sprockets when theyre spun backward. 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. Features Designed to fit a variety of bikes from MTB to road; spacer required to fit hub body to road bikes Compatible with HG-X11 and HG-EV 11-speed chains (not included) Already have an account with us? If you hear a strange "shuffling" noise coming from the disc rotor area of your disc brake bicycle, it could be disc rotor distortion. 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. THIS WEBSITE USES COOKIES TO IMPROVE YOUR USER EXPERIENCE. Good to be back . See below for details on those. If you pull the lever and let it spring back against its stop, the RX600 is quieter and feels more damped than 105, which might make it less prone to rattling over really rough ground. Shimanos 1 offering lags a little behind some of the competition if you keep things strictly in the family and dont mix in aftermarket components or push the spec limits. Compatibility. These newer 11 and 12-speed mountain bike cassettes fit the older and narrower HG freehub body by cantilevering the biggest cogs over the spokes. Tel 01225 588855. SRAMs Force 1 beats GRX narrowly too, with a 10-42 cassette options that gives a low gear of 38/42 (24.7in) and a high of 38/10 (103.8in). For 2x11 our chainring options will be 48-31 or 46-30. With the bottom bracket installed in the frame, installing or removing the crank is extremely easy. *When using GRX brake parts, only TIAGRA hydraulic compatible parts are compatible. Mounting adapters for bicycle disc brakes are essential when changing calipers with different standards or rotor sizes. Shimanos new GRX line is all about choice. Campagnolo deserves big points for such component fitment longevity. Like the rear derailleur, it gets hex-headed limit screws. Shimano Dura-Ace, GRX Road/Gravel Shift Cable Set (Y0BM98010) Tubeless tires have seen a dramatic increase in the number of users over the past few years. This 23-spline freehub body is noticeably shorter in length (26 mm) than an HG body and uses cassettes that hang the smaller sprockets over the end of the freehub. Advantages and disadvantages of torque management. If you wanted a 1x system with RX600-level components, for example, you'd buy an ST-RX600-R right shifter and a BL-RX600-L left brake lever. It has almost full Deore groupset, except crankset. GRX offers both 1x11 and 2x11 drivetrain options. At (approx) 35 mm across the spline length, the original-width HG freehub remains current for mountain bike purposes, but is discontinued on road-specific wheels. 1x GRX chain sizing with 42T cassette. 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. 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 RD-RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. 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. What is hookless rim? Shimano Microspline freehub bodies are only compatible with Shimano 11 and 12-speed mountain bike cassettes that feature a 10T smallest sprocket. The 1 RX600 option gets a 40t chainring, while the 1 RX810 crank gives you the choice of 40t or 42t rings. The shifting and braking are both as good as weve come to expect from Shimano and I cannot fault the ergonomics the tall hoods feel very secure in your hands and the lever shaping is just right. Shimano 10-speed components include the new 10-speed TIAGRA 4700 series and the old 10-speed ULTEGRA 6700 series and 105 5700 series, but the GRX 10-speed is compatible with the new 10-speed TIAGRA 4700 series. "For those who want to try out disc brakes but don't want to buy a new bike, we've put together a list of the parts you'll need to buy disc brakes and the points to keep in mind when buying. Mat has been road.cc technical editor for over a decade, testing bikes, fettling the latest kit, and trying out the most up-to-the-minute clothing.

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