THE BINDERS. The GRX cranks like the front man derailleur sit 2.5mm broad at the rings. The only compatible combinations of Shimanos GRX for gravel and TIAGRA for road bikes are TIAGRA/4700 series and 4600 series and GRX 10. For reference I have 37t single ring with 10-42 cassette and the grx derailleur. I used a Dremel to remove Swap the bar and shifters and levers (dont think you need brifters because you dont). From: $239.99. From: $238.99. It is compatible with all Shimano Ultegra R8000 Di2 and Dura-Ace R9100 Di2 shifters. SRAMs AXS road groups have switched to X-Range gearing with smaller chainring sizes and wide-range cassettes. Wide Range Derailleurs. They utilize the same bottom brackets and spacing at the spindle, but do widen the Q-factor to Campagnolo. Rival 22 11-speed Rear Derailleur. [6] 4. 12-speed Di2 compatibility. The current generation FD-RX815, FD-R8050 and FD-R9150 front derailleurs are available in braze-on version only. The GRX derailleur is available as 10 speed (RD-RX400) or 11 speed (RD-RX810) versions. 539. 1 color. While the GRX has its own calipers that look, feel and perform like the Ultegra equivalent, its mechanical shifting/ hydraulic brake levers offer a few differentiation points. The first is relatively subtle but welcomethe STI brake levers now have a slightly rubberized textureand offer more grip with or without gloves. Front and Rear Derailleurs. The 11 speed Shimano GRX Di2 and 12 speed SRAM XPLR AXS both have the electronic shifting option, but it's implemented differently. 1 color. Shimano GRX is here: gravel-specific and 1 components for Ultegra, 105 and Tiagra. 11-40T cassette with a Shimano RX-810 rear derailleur. They utilize the same bottom brackets and spacing at the spindle, but do widen the Q-factor to 151mm . See how much the parts cost and weigh below in the Dura-Ace and Ultegra options. 1027 FD Shimano Ultegra R8000 Down Swing. Efficiency of 1x Vs 2x Drivetrains. Shimano GRX RX810. Ventura Roubaix; 25 d ago; 7. The gravel-oriented GRX Di2 rear derailleur uses the same clutch mechanism as the rest of Shimanos mountain bike derailleurs which can be toggled on or off. $54.99. Shimano Ultegra R8000 front derailleur (FD-R8000) Shimano 105 R7000 front derailleur (FD-R7000) Shimano GRX front derailleur (FD-RX810, FD-RX400) as advised by a These typically have a 42t front chainring combined with an 11-42t rear cassette. Kab. All components at the level of RX800 and RX600 can be used together, because they are both 11-speed. Shimano GRX was launched in 2019, with the goal of offering a groupset tailored to the growing trend towards bikes designed to traverse mixed terrain. Shimano Ultegra R8000 Front Derailleur. Ten Showstopping Hand-Built Bikes at Unbound Gravel To Unveil SHIMANO GRX Limited. You can have a GRX groupset with either a mechanical or electronic front derailleur. Browse our selection of front and rear bike derailleurs from top brands. As you may have seen in the compatibility charts above, almost any combination of components will work. 2x drivetrains operate more efficiently than 1x drivetrains because there is less friction in the system. Quick view View Options. The new Ultegra RX derailleur comes in mechanical RD-RX800-GS and Di2 RD-RX805-GS models. Rp 5.610.000. The test showed that 2x drivetrains lost less energy to friction throughout the entire gear range than 1x drivetrains. The Ultegra RX - a road derailleur with a clutch - came to the rescue in the summer 2018. Don Upgraded from an Ultegra derailleur on my gravel bike for the clutch mechanism. In fact, it's nearly identical to the RX version of the Ultegra derailleur that was launched just last year, which took queues from the Shadow mountain bike derailleur, adding in a clutch mechanism to reduce chain slap and dropped chains for a quieter and more secure ride both on and off-road. The SHIMANO GRX RX-810-F front derailleur offer lighter front shifting operation and easier setup thanks to the new link construction and integrated cable tensioner. GRX 42T Cassette CS-M8000-11 60. Elevate Your Adventures With Racks, Rooftop Tents & More. GRX FD-RX810 Front Derailleur. Rear Der: GRX Di2. Shimano Di2 Wireless (partially) As Shimano describes it, the new Di2 system was designed to be wireless where it matters. The front and rear derailleurs are still wired to a central batterywhich lives in the seatpost in most casesbut the shifters are now wire-free and communicate with the derailleurs using an unspecified wireless signal (Wireless Di2 1 color. Unfortunately, my Shimano Ultegra FD-R8050 front derailleur doesn't have enough tire clearance (WTB Nano 700x40s that measure out to 45mm). Front derailleur SHIMANO GRX Di2 FD-RX815-F The AXS 12-speed cassette is 1.85mm too wide for the XD driver; that cassette requires the wider XDR driver. While Shimano prefers to limit the cassette to an 11-42, it's widely understood that the 11-speed GRX 812 rear I'm currently running on a Shimano GRX groupset with the RX810 derailleurs and 48-31T cranks. The derailleurs are approximately on par, with an RX810 rear derailleur sitting at 251g, and an Ultegra RX mech quoted at 248g. 1 color. Shimano. Compatibility for both 1x and 2x drivetrains. Today I read an interesting article on the Gravel Cyclist website. $485.00. 20 d ago. RX800, RX600 and RX400 ranges add new levers, derailleurs, cranks and more The bike comes with the Shimano GRX 11 speed shift/brake lever and RX 812 rear derailleur, 11-42 cassette and 44t chainring. GRX components are equivalent to Tiagra (GRX 10 speed), 105 (Grx 600 11 speed) and Ultegra (GRX 800 and 800 Di2). 1 color. Shimano FD-M9050 XTR Di2 Front Derailleur - 3 x 11 Speed. New ULTEGRA R8100 Road Components Deliver SHIMANOs If not, shift back into low gear and re-adjust the height with the positioning clamp. Theres a 10-speed mechanical GRX rear derailleur oriented to 2x drivetrains (but will work with up to a 36t rear cog), mechanical and Di2 2x rear derailleurs (RX810/RX815), and mechanical and Di2 1x rear derailleurs (RX812/RX817). Shimanos gravel-oriented GRX mechanical components include a 1x and 2x rear derailleur. Terms and conditions apply. GRX 800 is on par with Ultegra regarding material usage and weight, 600 with 105 and 400 with Tiagra. Find the latest Road Bike Front Derailleurs for sale at Competitive Cyclist. Front Derailleur FD Shimano GRX RX 810 Down Swing Braze On Down Pull. the all-new grx fd-rx810 front derailleur is designed for gravel specific riding, and while it contains much of the same technology that you'll find in shimano's ultegra road front-derailleur, it's 197. With typical Shimano attention to detail it's delivered a groupset that works brilliantly in any weather or terrain, and evolution will no doubt sort out the current shortcomings. As with the rear derailleur, you can have mechanical or electronic shifting on the GRXs front derailleur. You either have to get a GRX crank, or you have to switch to an Ultegra front derailleur. Otherwise, that cross-chain rub wont entirely go away. Shimano Ultegra R8000 Mechanical Front Derailleur $60.00 $59.00. Thats because the GRX front derailleur sits outboard further than Ultegra, Dura-Ace, etc. in order to pair with the wider chainline of the GRX crankset. Scroll down this pdf on the Shimano support web site to this statement, To better accommodate wider tires for gravel riding weve pushed the chainline out 2.5mm. Rp 1.500.000. Both offer a front- and rear-specific design, mean there are a sum of four calipers. Shimano Ultegra Di2 FD-R8050 2x11 speed Road Bike Front Derailleur, New In Box. The GRX shifters are supposed to be interchangable with Ultegra, but that doesn't necessarily mean a DR designed for 50/34 on the low side would or would not work with a What is proper function for trim on Ultegra-8000 shifters. The unit is compact and accommodates chainrings up to 53T. Learn More . Ultegra FD-R8000 Front Derailleur. If you'd like to be able to use the full range of your gears without that pesky rubbing noise, the trim function of many front shifters can make the bad noises go away. Other than front derailer they are Sitting atop the hierarchy, RX810 is said to align with Ultegra, whereas RX600 and RX400 are destined for the OEM market and sit alongside 105 and Tiagra. The SHIMANO GRX RX815 DI2 front derailleur delivers quick and smooth front shifting even under high pedaling torque. We now also have SRAMs amazing eTap shifting, which is wireless, but Im mainly talking about Shimano today. SRAM's XPLR AXS is wireless - the shifters and rear derailleur are not connected by wire, instead communicating via radio waves. This guide compares Shimanos Ultegra Di2, Dura Ace Di2, and GRX Di2 lines with Srams Force eTap AXS, RED eTap, and Eagle eTap lines. B. ULTEGRA R8100 offers a completely revamped line-up of wheelsets for every type of rider and every terrain. 2 Is there any particular reason you want to mix FC-R8000 cranks with a GRX Di2 FD-RX815-F front derailleur? Derailleur Compatibility: Di2 Braze On. GRX Front Mech FD-RX810 35. K-Edge. 3. Ultegra and Dura-Ace systems. RX815 Di2 levers All components at the level Shimano GRX RX810 2 x Mechanical Groupset Shimano. Wound spring inside mechanical front derailleur. Shimano FD-8150 Ultegra Di2 Front Derailleur - 12 Speed. by cxwrench. With the fast and accurate Di2 shifting technology, the Shimano 12-speed Ultegra RD-R8150 rear derailleur is extremely versatile thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes. $31.99 (1) Shimano Ultegra RD-R8150 Di2 Rear Derailleur 12-Speed. Yes - you can indeed use Ultegra on the front and GRX on the rear. Gravel ready features include grippy levers, and front derailleurs which are built with 2.5mm more outbound clearance for wider tires. The MSRP of The RD-RX805 model has a claimed weight of 280g (compared to 249g for the RD-R8050) and the RD-RX8050 weighs 248g (compared to 210g for the RD-R8000). Rear Cassette: SRAM XD 10-44 (assuming this is compatible with the Grx RD) Cranks: Paraxis Carbon Zyante 165 or 1 x drivetrains are almost universal on higher-end mountain bikes and gravel bikes. For road, AXS X-Range provides the easiest low gear (43/30t chainrings + 10-36t cassette vs. 50/34t chainring + 11-34t cassette). FEATURED. Then install the front derailleur, snug the 5mm fixing bolt and turn in the Support Bolt with the 2mm hex until it makes a mark in the tape. The latest generation 12-speed Shimano Dura-Ace and Ultegra Di2 drivetrains currently dont offer a clutched derailleur option (the previous generation had the clutched Ultegra RX). The 11 speed Shimano GRX Di2 and 12 speed SRAM XPLR AXS both have the electronic shifting option, but it's implemented differently. Kota Tasikmalaya Bicycle Empire (1) Tambah ke Wishlist. The C50 offers a superb balance of aerodynamic efficiency and low weight. Shimano's GRX 600 groupset is an excellent way to breathe gravelly life into an old (or new) wide-tyre-clearance frame. Shimano GRX cranksets feature a +2.5mm outboard chainline, which improves rear tire clearance, making room for wide gravel tires. The derailleurs allow for full use of the cassette, in either chainring, without chainrub on the front mech, and the chainsets come in 53/39, 52/36 and 50/34 combos. The RD-RX812 is compatible with GRX levers only, but that is because the RX-RX812 is for 1x setups, SRAM. If you choose to go the 2x route for GRX the crankset will be heavier (710 grams) and youll have the added weight of a front derailleur (96g), but the cassette will be lighter (335g). Edited. REAR: Best for Touring or Gravel: Shimano 105 RD-5701-GS. This doesnt mean that you You may need to swap out the rear derailleur as well but maybe not. It's designed for a wider, 17T front range and it has programmed chain guide trim settings and can be used in full or semi SHIMANO SYNCHRONIZED SHIFT modes. SHIMANO Reignites the Road with New 12-Speed DURA-ACE R9200 Premium Road Components. CGR Ti - Gravel . Installation of the front derailleur (Front double) Direct mount type 1 (z) Temporarily attach the front derailleur to the frame. Introducing SHIMANO GRX Front Derailleur (10-speed) Ergonomic power curve Integrated cable tension adjustment Natural stroke feeling Chainline +2.5 mm vs. conventional road FD Compatible with up to 42 mm tires Shimano FD-R8000 Ultegra Double Front Derailleur - 11 Speed From: $54.99. GRX Chainrings 30/46 FC-RX600-2 85. Check to The Shimano GRX RD-RX812 rear derailleur is 1x-specific The Shimano GRX RD-RX815 Di2 rear derailleur for electronic shifting is optimized for Shimano 2 x 11 drivetrains, though it can also be used with narrow-range 1x11 Shimano drivetrains as well. GRX Rear Derrailleur RD-RX812 75. The longer-cage mechanical and Di2 versions When you remove the front derailleur The 10 speed is compatible with Tiagra 4700 which has the same cable pull as 11 The GRX brake calipers come in the 800 series and the 400 serial. If you want They utilize the same bottom brackets and spacing at the spindle, but do widen the Q-factor to 151mm. You do have to be careful about front derailleur and crankset According to Shimano, the highest cassette you can run on an RX810 derailleur is 34T. From RX800 (Ultegra equivalent), RX600 (105 equivalent), or RX400 (Tiagra equivalent). As a result of this, GRX double cranks must be used in conjunction with a GRX front derailleur. FEATURED. Furthermore, the SRAM 12-speed MTB chain doesnt work on the Compared to regular road front derailleurs, the GRX front derailleurs have an SRAM's XPLR AXS is wireless - the The Shimano compatibility documentation gives the official answers. Both use the companys Shadow technology and have the same low-profile appearance as the R8000 and R8050 models, which Shimano representatives said was by design. ROAD. 08/31/2021. Late breaking news: Shimano just announced their Dura-Ace 9200 and Ultegra 8100 groups that are semi-wireless. $238.99. Works with Best for Budget: Shimano Acera RD-M360. Shimano's GRX is our (and most riders') jumping-off point. Campagnolo Record Reasons to buy Shop THULE. My long term review of the Shimano GRX RD-RX400 rear derailleur with an 11 sp 11-42 cassette using Ultegra 6800 11 speed shifters:* It works great!*. It features a 2.5mm outboard chain line design to allow wider tire clearance for mixed-terrain riding. Derailleur cage tucks closer to frame to avoid hits and bumps. Plus, the stability of the An electric derailleur uses a small motor to move the cage. It is even possible to get an Ultegra 46/36 version, and a Dura-Ace in 55/42t and 54/44t ratios. 1 color. From RX800 (Ultegra equivalent), RX600 (105 equivalent), or RX400 (Tiagra equivalent). This clamp on adapter provides a secure mounting point for braze-on Di2 front derailleurs. The front derailleur offers a The Ultegra front derailleur uses a heavier steel outer cage, for example, rather than the aluminium one found on Dura-Ace. Similar to the Shimano 105, the front derailleur design allows for easy shifting and includes a tension adjustment screw for optimal performance. Best for Aggressive The GRX cranks like the front derailleur sit 2.5mm wider at the rings. VeloNews and CeramicSpeed proved this by performing lab tests on the frictional loss of a 1x and 2x drivetrain.. In this guide, well cover performance, costs, customization, ergonomics, gearing, weight, price, and much more. Tiagra 4700 shifters are compatible with GRX RX400 derailleurs (front and rear), but apparently 105 5700 and Ultegra 6700 shifters are not. The lightweight C36 is an all-round performer and climbers delight. This guide outlines the pros and cons of Shimano Di2 Vs Sram eTap electronic shifting. Rp 698.000. Shimano GRX RX815 Di2 11-Speed Front Derailleur. CASSETE SPROCKET SRAM XG 1290 D1 10-33. It features a 2.5mm outboard chain line design to allow wider tire clearance for mixed-terrain riding. In the end they are extremely similar. 1975 front derailleur work with the Centaur?Thanks. New Bicycles that you can research and buy online, and get it delivered in a 'Fully Fitted' box. (RX has 11t) GRX has a 40t It features a 2.5mm outboard chain line design to allow wider tire clearance for mixed-terrain riding. Shimanos GRX for gravel is SRAM. Shop great deals on premium cycling brands. 1 color. Shimano GRX RX810 11-Speed Rear Derailleur. Or from: US$125.05 a month . Furthermore, the rear derailleur cage uses Durable alloy construction handles mud and off-road adventures. The GRX-specific front derailleur handles shifting across the 17-tooth jump smoothly. One of the main benefits of this kind of set-up is simplicity and a small weight saving. Tulungagung Gun2 Bike (3) Tambah ke Wishlist. In class and price, GRX is divided into three levels. After a few long* gravel/ Just this week I saw a sweet Orbea fitted with Ultegra going for $500. Voila, youve got a high-end bike a low-end price. If I went to the mtb crank I could go 25/40t up front and 11-32 cassette with a smaller and lighter rear derailleur. Beli SHIMANO GRX FD-RX810 Front Derailleur Gravel 2x11 Speed - Individual Pack di HobbyOne Official Store. The GRX cranks like the front man derailleur sit 2.5mm broad at the rings. Linkage system on a front derailleur, called a parallelogram. Shimano's Di2 (pronounced "dee-eye-two") was launched way back in 2009. Pay attention to the low maximum capacity of the sprocket. New Rear Derailleur and Front Derailleur. In some (rare) cases the clamp can be put above/below the frame mount, so it can stay, as long as it doesnt interfere with FD movement and proper mounting relative to the front Shimanos GRX Di2 gravel drivetrain is currently 11-speed and can be run as a 2x or 1x. the Ultegra Di2 FD-R8050 will get along just fine with GRX Di2 rear Here, the trim position feature prevents chain rub when moving across the cassette. Both Rave SLR colours can be outfitted with top-end road accessories (new Shimano Dura Ace Di2, new Shimano Ultegra Di2, Sram Force AXS) or high range gravel accessories (Campagnolo Ekar, Shimano GRX or the new Sram Force AXS XPLR) with road or gravel tyres up to 42mm. GRX 10-speed predominantly comprises RX-400 series components, but to confuse things a little, the chainset is given the RX-600 moniker. The Giant Defy Advanced 2020 model costs 1,949 ($2,514) with Shimano 105 and 2,199 ($2,837) with Ultegra (250 difference for the hard of mathing); Canyons Endurace CF Attach the derailleur to the frame. 332. Shimano Tiagra Triple Front Derailleur. darren2323; 1 mo ago; 2. Cancel Out of Stock Add To Basket. SHIMANO GRX CARBON WHEELS; FIRST LOOK: SHIMANO GRX LIMITED EDITION DRIVETRAIN; READY FOR UNBOUND GRAVEL: SHIMANOS GRX LTD. Di2 Front Derailleur: $449.99, 96g; Di2 Rear Derailleur: $814.99, 215g; $19.99. Start by buying a decent drop bar bike. $59.99 (2) Campagnolo. There are a couple of other things worth mentioning: The GRX Chain line is 2.5mm more outboard than The Shimano GRX FD-RX815 Di2 front derailleur is optimized for gravel riding with wider front tire clearance and wider range front gearing. Bring It All. Ekar 13 Rear Derailleur. More compact and faster than ever, the ULTEGRA R8150 front derailleur performs digitally precise front shifts under any circumstances. Thats because the GRX front Theres three key levels of spec: RX800, RX600 or RX400. The 10-speed RX400 rear derailleur Front Derailleur (If 2x is selected) Rear Derailleur (choice of 1 or 2x specific) Junction A (choice of bar end, in frame, or under stem) Shimano Ultegra Di2 8050 Groupset SHIMANO GRX DI2 Front Derailleur $238.99. $117.99. Combining Shimano's new Di2 platform and the Shimano FD-M9070 XTR Di2 Front Derailleur - 2 x 11 Speed. The Shimano GRX RX-810-F front derailleur offers lighter front shifting operation and easier setup thanks to the new link construction and integrated cable tensioner. It offers a very wide range of gears (my bike has 48/31 front chainring and an 11-34 cassette but the rear mech clears an 11-42), improved braking $46.99. It has an extra clearance of 2.5mm, so you can use it on bikes with wider tires, up to 42mm. If you want to compare GRX Di2 components, the rear derailleur (288g) and front derailleur (131g) are slightly heavier while the shifters are only 7 grams lighter. The rear mech however is I purchase the GRX specifically because it allows more gear options than the Ultegra derailleur. Shifters: either dura ace or GRX Di2. When shifting outward, the chain is flexed to the right and begins to rise up from the pedaling action. We Keep You Pedaling. THE This also means that the GRX cranks Q Shimano FD-RX815 GRX Di2 Front Derailleur - 11 Speed. Works great and no more chain slap on the frame. 05/31/2022. Delavigne; 12 d ago; 2. For example the 11-speed GRX shifters would work with a current Ultegra rear derailleur, or vice versa. Force XG-1270 Cassette - NEW 10-36t Version. (z) 5 mm hexagon wrench 2 H L [A-B] (z) (B) (A) Adjust the low adjustment bolt and align the flat portion of the chain guide outer plate parallel to the flat surface of the largest chainring. Shimano Tourney TX-800 Rear Derailleur. SHIMANO GRX FD-RX810 Front Derailleur Gravel 2x11 Speed - Individual Pack di Tokopedia Promo Pengguna Baru Pasti Ori Garansi 7 Hari Cicilan 0% Kurir Instan. Just as with the mechanical Dura-Ace equivalent we saw on the Specialized S-Works From: $99.99. The Shimano GRX FD-RX810 front derailleur is designed to handle the 17 teeth difference of the FC-RX810-2 crankset's chainrings without effort. Shimano Ultegra R8000 front derailleur (FD-R8000) Shimano 105 R7000 front derailleur (FD-R7000) Shimano GRX front derailleur (FD-RX810, FD-RX400) The front $259.99. Shifting only occurs if the rider is pedaling. you can use the 10 and 11 gears on my 11-42 cassette and still be on the large front chainring. The SRAM Force XG-1270 10-36t cassette is optimized for the precise shifting of eTap AXS and features our X-Range gearing technology. In this section Im assuming you have an Ultegra 6770 setup the way it was originally produced - with the SM-BTR1 external battery and either the SM-BMR1 or the SM-BMR2 external battery mount. Think full carbon rims, three rim depths, tubeless compatibility and superb driving rigidity. Shimano FD-9000 Dura-Ace Double Front Derailleur - 11 Speed If you choose to go the 2x route for GRX the crankset will be heavier (710 grams) and youll have the added weight of a front derailleur (96g), but the cassette will be lighter (335g). Shimanos GRX for gravel is basically compatible with road bike components, but please note the following points. Before I get started though, a quick note on 12-speed Di2 compatibility. $334.99. SHIMANO DERAILLEURS BEST TO WORST. Compatible with all 2x and 1x eTap AXS crankset, chainring, and front derailleur options. Weighs a few grams more but not a problem. Main advantage of GRX over the road group sets is better grip on the shifterhoods and the clutch on the rear derailleur that will control the chain a lot better on bumpy trails. Rival AXS Front Derailleur. Check to make sure the derailleur cage is at the right height. As I understand it, this has the same 1.4 pull ratio as the all of their road derailleurs. Shimano GRX 810 Rear Derailleur - 11 Speed - Options. Super Record 12 Rear Derailleur. Kode 1967. From: $403.00. The only compatible combinations of Shimanos GRX for gravel and TIAGRA for road bikes are TIAGRA/4700 series and 4600 series and GRX 10. To compare the Ultegra RX to the GRX 2x (RD-RX810), the key differences are: GRX has a 13t tension pulley which should slightly reduce drivetrain resistance. NOTE: Not all shifters have a trim function. That generation of components is obsolete now, but the name - digital integrated intelligence - lives on in the current Dura-Ace and Ultegra Di2 groups, and recently become available in GRX, Shimano's dedicated group for gravel, adventure, and cyclocross bikes as well. No. Smooth, quick shifting from 10t on up. Noisy SRAM Red ETAP small 36 front chain ring on 172.5 cranks. GRX RD-RX817 Di2 Rear Derailleur. ROAD. He said that, unlike Shimanos 11-speed MTB derailleurs, the clutch on the GRX derailleur doesnt change the shifting feel at the lever when engaged. The SHIMANO GRX RX-810-F front derailleur offer lighter front shifting operation and easier setup thanks to the new link construction and integrated cable tensioner. $410.00. Still, it wasn't what we had been waiting for - firstly, the purists were more bothered by the fact it Ultegra FD-R8150 Di2 Front Derailleur. Browse through a wide range of bicycles based on your price preference, model and brand at Choosemybicyle.com PRO Braze-On Chain Catcher. The derailleurs allow for full use of the cassette, in either chainring, without chainrub on the front mech, and the chainsets come in 53/39, 52/36 and 50/34 combos. In class and price, GRX is divided into three levels. Shimano FD-R8050 Ultegra Di2 Front Derailleur - 11 Speed. As buyers progress through the The adapter is designed for use with the Ultegra or Dura-Ace more Di2 series: 6770, 6870, and 7970. The New Clutch-Based Shimano RX Rear Derailleur. Shimano released their 12-speed DURA-ACE and Ultegra Di2 groupsets to the Ill try to explain based on todays Shimano e-shifters since things have changed a lot in the years since Di2 debuted. Shift to your middle front chainring and see if the cage is sitting properly.