While 1x has pretty much become the go-to drivetrain choice for mountain bikers and is becoming the preferred 'cross and gravel set up too, double chainrings still rule on the road. One reason the front derailleur has fallen out of fashion with the off-road set is the added complexity and...

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Precise, quick-shifting 12-speed road rear derailleurThe SHIMANO 105 12-speed rear derailleur combines the smooth and stable shifting that is a staple of SHIMANO SHADOW RD design with direct mount compatibility and a wider gear range capacity.

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Shimano's 105 RD-R7000 Rear Derailleur is a budget-friendly option that offers a smooth ride. As far as 11-speed derailleurs go, this one delivers performance and worry-free shifting for confidence riding up and back down the mountain. Put your mind at ease and ride with your happy face on.

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Shimano brings its ultra-reliable electronic shifting to the masses with the 105 RD-R7150 Di2 12-Speed Rear Derailleur. Pulling together all of the features we've come to love from their Dura-Ace and Ultegra Di2 road cycling systems, Shimano has created a low-profile rear derailleur that we can...

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Comfortably smooth and intuitive auto-shifting rear derailleurKeep your focus and enjoy comfortably smooth pedaling with the inspiring and intuitive automatic shifting of the SHIMANO CUES RD-U6050 rear derailleur.

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Comfortably smooth and intuitive auto-shifting rear derailleurKeep your focus and enjoy comfortably smooth pedaling with the inspiring and intuitive automatic shifting of the SHIMANO CUES RD-U6070 rear derailleur.

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System efficiency continues to drive Shimano's innovation, and it's apparent in the new Deore 12-speed rear derailleur. Taking a quieter approach to trail sessions, Shimano uses Shadow RD+ technology, which stabilizes the chain to reduce slap, and more importantly, chain drop. With less tension...

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Shimano's new Dura-Ace Di2 RD-R9150 11-Speed Rear Derailleur boasts a sleek profile that practically hides from the wind and finally brings the Synchronized Shift functionality honed in the trail-focused XTR Di2 system onto the road. Enabling Synchronized Shift lets the Di2 system work its magic...

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At a time when electronic drivetrains are gaining unstoppable traction, we appreciate that Shimano chose not to neglect its storied pro-level mechanical drivetrain for Di2, making careful, meticulous updates that have resulted in subtle, but significant, improvements to functionality. For those...

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Shimano's refinements of the latest Dura-Ace Di2 group impress upon us the brand's need for speed, reliability, and performance. This is the group where Ultegra receives trickle-down technology from, and what we would categorize as top-tier. In particular, the Dura-Ace RD-R9250 Di2 Rear...

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