Shimano GRX 817 Di2 1x11sp Rear Derailleur

Shimano GRX 817 Di2 1x11sp Rear Derailleur

This stunning rear mech is engineered to give you perfect shifting performance when riding on rough roads, gravel and muddy conditions. Ready to take on any challenge, the RX817 features an adjustable chain stabiliser which prevents chain slapping and drops. Shimano has also included a switch stabiliser which can be set to on/off to match the terrain conditions, which allows you more freedom to explore the unknown.

Gravel-Tuned Rear Shifting

Inspired by off-road groupsets, you’ll enjoy its silent and uninterrupted rear shifting on harsher terrain conditions, where most common systems would fail. Whether you’re planning a new adventure or joining friends after work for a ride out, this superb model’s gravel-tuned clutch makes gear changing a breeze in any situation.

Smooth and reliable, this rear derailleur features some of the finest technologies to keep you riding at the top of your game. Its revolutionary Di2 shifting system solves many of the challenges that mechanical systems face with the use of state-of-the-art electronics. This technology gives you instant, accurate and lightning-fast shifts every time you ride, at the push of a button. You’ll also be able to change gear when under heavy load while climbing and accelerating for a top-level shifting experience.

Features:

 
• Use: Gravel, Road
• Speed: 11 speed

 

• Link Bushings: 4 fluoric coated link bushings

 

• Low Sprocket Max: 42T

 

• Low Sprocket Min: 40T

 

• Top Sprocket Max: 11T

 

• Top Sprocket Min: 11T

 

• Total Capacity: 31T
• Spring Type: Shadow RD+

Technologies:

 
• Di2: The revolutionary DI2 shifting system solves the challenges drivetrains present to the power-delivery equation in cycling. DI2 gives you instant, accurate, lighting-fast shifts the first and every time, at the push of a button. Even in the most extreme conditions, shifting is precise and controlled. You can change gear even under heavy load while climbing or accelerating. With DI2, you are in complete control.

   

• E Tube: The E-TUBE platform’s “Plug & play” and D-FLY wireless connections make it easier than ever to check the system’s status, and apply customized settings to DI2 and Shimano Steps components with a PC, tablet or smart phone.

 

• SEIS: The SEIS innovative shift technology is still based on the Shimano Index System (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. This electronic shifting system has been extensively tested over past two years by several professional riders in all conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at the same time. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting.

 

• Shadow RD+: Less distraction quiet drive train. Rear derailleur stabilizer reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device.

A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).

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