Shimano Ultegra R8000 Medium Box Rear Derailleur

Product Information

I appreciated the wide range of the 11-32t cassette the long-cage GS derailleur supports, especially in the last 20 miles of the race. Our Allied Alfa All-Road test bikes had a compact 50/34t Dura-Ace crankset paired with an 11-32t rear cassette, which provided a very spinny 34/32 climbing gear ratio compared to the 36/28 of my personal cyclogravel bike. Updated May 24. Shimano is known as a company that does not chase after trends, so its recent release of the clutch-based Ultegra RX rear derailleur is a sign the Japanese company thinks the popularity of gravel riding has some staying power. SRAM’s 1x clutch-based derailleurs have become popular with U.S. cyclocross racers— and a number of new gravel bikes—but Shimano representatives told Cyclocross Magazine and other journalists the new derailleur was designed primarily for gravel riding. For me, the biggest difference of R8000 over 6800 is the shape of the brake lever. The curve for your index finger is more pronounced and if, like me, you like to wrap your finger around the bar when on the hoods then you'll find it very comfortable.

Both models come with a GS long cage that fits cassettes between 11-28t and 11-34t. Lawrence explained the company added room for the 34t cog after test rides on the steep gravel roads in Colorado. That’s pretty low for road 2x gearing, but a few steps away from the 11-42t many 1x users are used to (in case you’re thinking about a RX805 single chain ring setup).

The latest iteration of the Shimano Ultegra groupset, R8000, offers a huge leap in performance and aesthetics over the previous 6800 version which makes it an absolute joy to use. I can't see any reason to spend more on a groupset – the only question is whether it does enough to justify its price against its cheaper sibling, 105. When I press the cage gently with my finger to bring it forward, the noise disappears and the chain no longer seems to "vibrate" above the top pulley (you can watch the difference on the video, looking the chain just above the top pulley).

Shimano’s new Ultegra R8000 cassette supposedly offers “HIGH-PERFORMANCE GEAR COMBINATIONS” and is virtually indistinguishable from the previous generation. It shifts just fine and weighs the same as the old one. We changed the chain, indexed the gears, tried to play with the b-screw on the rear derailleur, that did not solve the problem. Today I received a new bike for my girlfriend, equipped with exactly the same groupset, I see the same problem, the noise is even louder, as well as the vibrations (ask me if you want a video for this bike too).Shimano Shadpw RD -The mechanism rear derailleur, SHIMANO SHADOW RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.

Shimano has just released its new R7000 105 groupset, which is pretty much the only groupset any of us will ever need. I'd say that Ultegra is just a tiny little bit more refined throughout, but whether it is worth the extra expense is for you to decide. Conclusion Stay tuned as we take a closer look at what the Shimano-sponsored athletes ride this fall. Ultegra RX Ride Impressions Some readers will likely note Shimano already has clutch mountain bike derailleurs that can be paired with electronic shifting for 1x systems. With the new Ultegra RX derailleur, Shimano expands compatibility to mechanical road shifting and suggests there is a benefit in having a clutch rear derailleur with double front chain rings when riding gravel.

Shimano Ultegra R8170 Di2 Disc Groupset

This Shimano Ultegra R8000 rear derailleur is designed to provide you with optimum road shifting performance. It's light, strong and has the best shifting characteristics. Upgrading to one of these derailleurs will make a world of difference!

Shimano has made no specific claims as to how much stiffer the new R8000 brakes are over the outgoing 6800-series model, but the latest Dura-Ace brakes are reported to be 43 percent stiffer than the previous generation, so we can likely expect similar claims here.Thoroughly wiggling it in a workstand, the tension of the cage pivot feels a little bit stronger than the previous generation, which should help to keep things quiet on rougher terrain. The lever is carbon fibre, which is one difference over 105, and both it and the paddle behind offer very light yet precise shifts, thanks to the reduction in swing of both to change gear. Shimano also had its pro team liaisons at the Almanzo event. They were somewhat mum on the Ultegra RX’s future in professional road and cyclocross racing. Word about the Ultegra RX first came out when the Trek-Segafredo team test rode the clutch-based derailleur before the Tour of Flanders spring classic. The team did not race with the Ultegra RX in Flanders, but they did at Paris-Roubaix. As one of the reps pointed out, the impact of the new derailleur did not show in the results. The materials which this derailleur is made from are lightweight and durable. Light metals are used which makes the derailleur very strong. These metals are optimally constructed and finished so that you don't take a gram to many up the mountain with you.