Questions tagged [grx]
GRX is a Shimano groupset targeting gravel bikes.
28 questions
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Shimano GRX600 levers and hose
I have Shimano GRX600 levers and Tektro T275 hydraulic disc brakes. According to my research, the grx600 series uses bh90 series hoses. My question is that can I use any bh90 hose with the right olive ...
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Widest range possible 2x11 GRX?
Shimano GRX 2x11 comes as 48/31 crank and 11/34 cassette covering 4.36 to 0.91 range. Are there options to widen this range? Quick search shows that it is only 48/31 and no-one makes 10-36 cassettes ...
2
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0
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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 ...
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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 ...
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Is Shimano GRX Di2 Bluetooth compatible?
Can I connect Shimano GRX Di2 via Bluetooth to E tube project software?
5
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2
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858
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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% ...
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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 ...
2
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2
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2k
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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?
5
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4
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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 ...
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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 ...
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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 ...
- 1,765
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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. ...
1
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2
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592
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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 ...
- 113
6
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2
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Fitting SHIMANO GRX FC-RX600 46/30 Chainset (11spd) to a road bike
Is it possible to fit the cyclocross GRX 48/31 crankset 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 ...
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4
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1
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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?
- 153
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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 ...
- 257
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1
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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 ...
- 113
1
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1
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459
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Shimano GRX Hub + CS-M8000
I fitted a second (nearly identical) wheelset, and now my derailleur indexing is not working. Shifting into the last sprocket is not working, and there are a lot of gears over the range not working ...
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2
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GRX800 position
I got a bike from chainreaction with GRX groupset on it.
The rear derailleur is not aligned with the cassette.
I think the hanger got bent during delivery, but the guy at the local shop says it's fine....
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1
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Replacement/substitute for a GRX 600/800 crankset
I'm currently building a gravel bike from (almost) scratch.
Due to the lack of availability of the GRX crankset in Europe, I'm looking for a replacement part of the 2x11 GRX 600/800 crankset.
So my ...
- 113
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1
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Chain pops up while backpedaling in highest gear
Backpedaling on highest gear (11t) causes chain to pop up/out off at the front top part of the smallest cog. The bike and all components are very new and stock. This is a 1-by Shimano GRX Drivetrain. ...
- 21
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1
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From Deore MTB to GRX Gravel
I want to convert my MTB to gravel, and the main issue for me is the transmission.
I plan to completely replace the transmission with 10x2, because it is pretty worn out. However, for me the main ...
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2021 Salsa Fargo and GRX 2x11 components
I’d like your advice on GRX component with 2021 Salsa Fargo frameset.
I didn’t research enough prior to purchase, and I found out that Bottom Bracket size was wrong, and even more, GRX may not work ...
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Shimano GRX Hydraulic Disc Sub Brake Levers with 105 groupset
The GRX groupsets seem to be compatible with common road groupsets (Tiagra, 105, Ultegra) which was also pointed out in this answer. Furthermore, a brief news article by Shimano states that the brake ...
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Shimano Cassette Size Change
I recently purchased a wahoo kickr core and I picked up a Shimano Tiagra CS-HG500 11-32t cassette to put on it. Currently I am running an CS-HG500 11-34t cassette and GRX400 setup. Shimano's website ...
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1
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GRX 815 STIs with XT 8120 4-piston caliper?
I want to use the XT 8120 4-piston caliper to my GRX 815 STIs to increase my braking power. After researching, I still haven't found a definite answer. I've also looked into the Hope RX4+ 4-piston ...
3
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1
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GRX FD-RX400 - full outer model?
I'm just mounting the GRX FD-RX400. In the manual it says "if using a full outer model, ensure..."
What does full outer model mean and should I do that? :)
- 1,037
6
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Shimano GRX 2x10 crankset compatible with mtb front derailleur + shifters?
I would like to replace my existing MTB crankset with a GRX crankset to get a bigger outer chainring (cannot find anything for my existing crankset, FC-M4100-2).
Does that even work? I'm trying to ...
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