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Shimano GRX RD-RX815 11-Speed Di2 Rear Derailleur

ShimanoGRX RD-RX815 11-Speed Di2 Rear Derailleur(Return to Product Page)

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Reviewed 10/22/2020
by J Stew
Cycling Enthusiast
New Jersey
Value Rating
Overall Rating
2 of 2 customers found this review helpful.
Shimano continues to NOT disappoint!

I was really torn between going with SRAM Force eTap and Shimano GRX Di2.

I currently use Ultegra Di2 on a road bike and it has almost never failed me. On the rare occasion that it has, it was due to a jockey wheel needing to be replaced or an alignment issue. Shimano really paved the way for electronic shifting and they haven't skipped a beat with GRX. I ultimately decided to go with Shimano because of my experience with Ultegra. I really liked the idea of having one battery to charge and in terms of battery life I have never had an issue with running out of battery while on the road. I realize this is just down to an individual remembering to charge the battery, but I really only find myself charging the battery maybe once every month. I figured that if I really was doing a backcountry ride where I was going to blow through a 1500-2000 mile battery without the ability to recharge, then at that point I can always carry a spare battery. While it's not as easy to swap out batteries compared to SRAM, with it stored in the seatpost it wouldn't be a situation that I couldn't do it.

Another reason I went with Shimano is due to replacement costs. Derailleurs, if needed to be replaced, are simply just cheaper.

I will have to say that getting all the Shimano parts was a PAIN IN THE ASS! This is largely due to supply chain disruptions around COVID, however Bike Tires Direct was solid in being able to get most of them. I welcome BTD to reach out to me with any questions around my experience (good/bad/neutral) - I'm def excited to look their way for future needs. Inventory and customer service are amazing in my experience.

Install:

One of the things I really liked about SRAM was the setup. Basically wire-free. However, I figured that this is a one-time deal and considering I'm not traveling too much with my bike I viewed this really as a set it and forget deal. I'm also very confident in my mechanic's ability to set up Shimano and so I didn't want to base my decision on this.

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