CeramicSpeed's Oversized Pulley Wheel System X makes for a drivetrain and efficiency upgrade worthy of world-class racing. Oversized 14-tooth and 18-tooth upper and lower pully wheels ensure smooth running and are based on high-quality ceramic bearings. It features less friction in comparison to...

More Info

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.

More Info

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.

More Info

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...

More Info

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.

More Info

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.

More Info

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...

More Info

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...

More Info

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...

More Info

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...

More Info