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...so the next Q is whether the GRX would be more resistant to knocks!
Shimano blurb suggests it's further swung under the cassette so should be safer. In theory....
andyfallsoff-
I've never seen one so have no idea. I'd expect stuff designed for off-road to be as 'hidden' as possible.
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https://www.reddit.com/r/gravelcycling/comments/e6luiw/ultegra_rx_vs_grx_rear_deraileur_what_gives/
42T
https://bike.shimano.com/en-US/product/component/grx-11-speed/RD-RX812.html34T
https://bike.shimano.com/en-US/product/component/grx-11-speed/RD-RX810.htmlShimano GRX RD-RX815 Di2 rear derailleur is a combination of the Shimano Ultegra RX rear derailleur and a Shimano mountain bike rear derailleur. It features a slim Shadow profile and clutch mechanism but has a slightly stronger clutch compared to Ultegra RX. It is also very slightly heavier than Ultegra RX, but the overall quality matches that of Shimano Ultegra. The Shimano GRX RD-RX812 rear derailleur is 1x-specific
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the next Q is whether the GRX would be more resistant to knocks!
On the basis that I've written off two Shadow Shimano MTB RDs in crashes, I'd say any benefits will be marginal. If you crash, and lay down the bike on the ground on the drive side while still moving, I doubt any additional clearance will be much use. If you don't crash, your legs will take the impact first, and provide a useful crumple zone for the rear derailleur.
My advice - don't crash. As usual, I am very bad at taking my own advice...
hippy
Brommers
If the RD wasn't adjusted right or had been knocked so it went out of adjustment it could've taken out the spoke. Normal use shouldn't have an RD in the back wheel, obvs.