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[Closed] Will GRX hydro levers work with Slx XT calipers?

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I need more braking power, 160mm rotors snd sintered pads just aren’t quite enough I recognise it might require a new fork etc. But could you pair a MTB caliper with the GRX levers?

Thanks!


 
Posted : 11/10/2020 8:55 pm
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I believe all the Shimano 2 piston calipers push the same oil volume.

The Hope RX4 caliper might be easier/cheaper than a new fork.

Clark also make a 160FM-180FM adaptor if your forks are up to it.


 
Posted : 11/10/2020 8:57 pm
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I believe all the Shimano 2 piston calipers push the same oil volume.

The Hope RX4 caliper might be easier/cheaper than a new fork.

Clark also make a 160FM-180FM adaptor if your forks are up to it.

Is there not a mineral oil / DOT5.1 compatibility problem with mating a shimano lever with a Hope caliper?

Was looking at this as a possible fix for my current banshee shimano brakes on my cross bike but thought this would be a problem.


 
Posted : 11/10/2020 9:55 pm
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Hope do 2 rx4 mineral oil & DOT 5.1 compatible calipers


 
Posted : 11/10/2020 10:02 pm
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Hope do 2 rx4 mineral oil & DOT 5.1 compatible calipers

They actually do 4 - post mount & flat mount for both dot & mineral oil


 
Posted : 11/10/2020 10:05 pm
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Specific RX4s are designed for mineral oil.

If you need more power, switch to organic pads .


 
Posted : 11/10/2020 10:27 pm
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Three - they don't do mineral post mount now. Or so I was told.


 
Posted : 11/10/2020 10:27 pm
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I've got GRX 400 levers paired with Zee brakes on my gravel bike and they work just fine. You may need to get new front and rear mechs...


 
Posted : 11/10/2020 10:31 pm
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I use xt m8000 calipers with some Di2 road levers. Those shifters are a few years old. This set up works a lot better than with r785 calipers.


 
Posted : 11/10/2020 10:31 pm
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Three – they don’t do mineral post mount now. Or so I was told.

Well they're still available to order on the Hope B2B so I guess you were told wrong.


 
Posted : 11/10/2020 10:43 pm
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Nice one cheers all. I’ll see what the girl can take! Seems daft that GRX only do 160mm. Hope don't do a suitable calaper 😕


 
Posted : 11/10/2020 10:48 pm