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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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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Over time derailleur pulleys wear out. Either the bearings go bad, or the teeth wear down enough to negatively affect shifting performance. If your bearings are feeling notchy, or the pulley teeth have rounded out, it's in your best interest to replace the pulleys to get the most out of your...

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Aside from some slightly modified aesthetics and a 10g reduction in weight, the Shimano Dura-Ace Di2 FD-R9150 11-Speed Front Derailleur carries over the high functioning precision of its 9070 predecessor. While the new 9150 rear derailler gets all the attention for its mountain-inspired changes,...

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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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Shimano embarks on a new journey with the Dura-Ace ST-9270 Di2 Shift/Brake System. Given the history of its Di2 shifting group, it goes without saying that this brake/shift lever brings new tech to the table that goes beyond their last model. This system supports the new 12-speed drivetrains, but...

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Following the trends in the bike industry, its not all that surprising that groupsets are taking to the gravel, and we appreciate the careful attention and time that Shimano took in designing the GRX RD-RX810 Rear Derailleur for powering through variable conditions on a drop-bar bike. If you've...

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