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Questions tagged [grx]

GRX is a Shimano groupset targeting gravel bikes.

2 votes
0 answers
54 views

GRX disc brake caliper confusion

Trying to sort a rubbing issue and keep reading things like "push BOTH pistons back in, squeeze lever to center pistonS" but it looks to me like there is only one piston? When I squeeze the ...
Neil's user avatar
  • 21
0 votes
2 answers
297 views

Shimano GRX chainring upgrade

i was thinking of upgrading my GRX FC-RX600 crank which has 46 tooth only and since i ride mostly flat sections, i want more teeth on my big chainring since i am running out of gears. thus the ...
macman's user avatar
  • 75
3 votes
1 answer
257 views

Is Shimano GRX Di2 Bluetooth compatible?

Can I connect Shimano GRX Di2 via Bluetooth to E tube project software?
Steve Simpson's user avatar
3 votes
1 answer
441 views

Having a double chainring and 11-42 cassette on a GRX 11-speed: goat link/tanpan vs cage swap

For some niche cases, gravel riders would appreciate to use wider range cassettes (11-40, 11-42 or 11-46) on their double chainring gravel setup, which would allow have ranges close to 600% (vs 507% ...
Rеnаud's user avatar
  • 21.4k
5 votes
1 answer
358 views

Why is my bike making a grinding and clicking noise?

I recently received my new Canyon Grizl CF SLX 8 with a GRX Di2 2x11 groupset. Fresh out of the box I put it in my stand to go through the gears. I immediately noticed a constant clicking noise like ...
Jesper Sommer Jense's user avatar
1 vote
2 answers
844 views

Flatbar shifters for 11-speed GRX groupsets

I have a GRX RD-RX810 rear derailleur and I need a compatible (thumb) shift lever for flat bars. Any suggestions which shifters are compatible for my setup?
Guillermo Guevara Rodriguez's user avatar
5 votes
4 answers
818 views

GRX 2x11 - what causes the chain to bounce significantly when shifting the cassette into a higher gear (smaller sprocket)?

I recently set up a new gravel bike with all new components, including a 2x11 GRX DI2 drivetrain. 31/48 and 11-36t. It has ridden under 600 miles and only seen rain once. It is accident free and has ...
jonatans's user avatar
4 votes
1 answer
315 views

Is it normal for rear derailleur tension to impact front derailleur tension?

I just received a bike from a bike shop. It has a GRX800 front derailleur (FD) and rear derailleur (RD). When taking a look at the derailleur setup to check if it is alright, I found something very ...
Daniel's user avatar
  • 143
5 votes
2 answers
2k views

Differences between FC-RX600-11 and FC-RX600-10?

Is there any documented difference between 10- and 11-speed GRX cranksets FC-RX600-10 and FC-RX600-11? Net search gives "closer chainring spacing", but I'm looking for a proof. Also ...
Konstantin Shemyak's user avatar
0 votes
1 answer
235 views

Does an XT rear shifter fit a GRX RD (both 11-speed, mechanical)?

Gravel bike specs: • Shimano XT 2x11 shifters, mechanical • Shimano GRX FD & RD, 11-speed/mech • 105 crankset, 50-34 The rear shifting is not smooth, especially when I transition to the 4th gear. ...
ice_juggernaut's user avatar
1 vote
2 answers
483 views

Campagnolo 2x11 Record with GRX derailleurs

I really don't like the Shimano 105 levers on my bike. I would like to switch them in favour of Campagnolo 2x11 Record, and would like to know if anyone tried to fit them with GRX system: Front ...
mrzob's user avatar
  • 113
6 votes
2 answers
1k views

Fitting SHIMANO GRX FC-RX600 46/30 Chainset (11spd) to a road bike

Is it possible to fit the cyclocross GRX 48/31 chain set to a road bike? I have a SRAM Red eTap shifting on my road bike. This restricts me to a 10-28 cassette. I am about to take on a very hilly ...
George Craig's user avatar
4 votes
1 answer
367 views

Compatibility of Dura Ace SL-BS79 bar end shifters with GRX RX400 derailleur

Are road 10s 2x10 Dura Ace SL-BS79 bar-end shifters compatible with gravel GRX RX400 derailleurs 2x10?
guyfromthesun's user avatar
6 votes
1 answer
2k views

Loud clunk moving to smallest sprocket

When I shift gears to the smallest sprocket it makes a very loud clunk sound. There's also a lot of movement in the chain, like a bounce. I've taken a video demonstrating this Video of clunk I'm ...
nblackburn's user avatar
1 vote
1 answer
317 views

Broken screw thread on GRX 800 crankset

I made my gravel-dream bike few month ago by hand. I followed all the user-manual sheets from Shimano in order to properly mount the GRX 800 crankset and the pedals on it. I respected the tightening ...
mrzob's user avatar
  • 113

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