What Brake Hose Bolt do I need for GRX brake levers?
12-01-22, 06:35 PM
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ignominious poltroon
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What Brake Hose Bolt do I need for GRX brake levers?
I just found out the hard way that the hose bolt that XT uses is a little bit narrower in diameter and possibly a different thread pitch to the one required for a GRX "brifter". Does anyone know what Shimano part this would be? Are the olives and barbs different as well?
12-01-22, 06:50 PM
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ignominious poltroon
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Is it possibly SB-BH59 ?
Edit: IT is NOT this. The BH90/M9 parts are compatible (see posts 6 and 7 below).
Edit: IT is NOT this. The BH90/M9 parts are compatible (see posts 6 and 7 below).
Last edited by Polaris OBark; 12-02-22 at 04:21 PM.
12-01-22, 10:32 PM
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I haven't checked, and leave that to the OP, but I believe that Shimano's site has pages of exploded views with parts identified by number.
As I said, it's purely a suggestion for the OP to try their luck at Shimano's site, which it he likeliest place to get a right answer to this question.
As I said, it's purely a suggestion for the OP to try their luck at Shimano's site, which it he likeliest place to get a right answer to this question.
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An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
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12-01-22, 10:47 PM
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ignominious poltroon
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They have the Dealers Manual and User's Manual but no Exploded View for the GRX "brifters". I checked Shimano's site and several on-line vendors before posting here.
I ordered the BH59 and BH90 from Amazon. Hopefully one of those two will work.
I ordered the BH59 and BH90 from Amazon. Hopefully one of those two will work.
12-02-22, 04:29 AM
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The recommended calipers diagrams for the GRX brifters show the parts you were probably looking for.
ST-RX600 / ST-RX815 - BR-RX810
https://si.shimano.com/en/pdfs/ev/BR...X810-4585B.pdf
ST-RX400 - BR-RX400
https://si.shimano.com/en/pdfs/ev/BR...X400-4574C.pdf
ST-RX600 / ST-RX815 - BR-RX810
https://si.shimano.com/en/pdfs/ev/BR...X810-4585B.pdf
ST-RX400 - BR-RX400
https://si.shimano.com/en/pdfs/ev/BR...X400-4574C.pdf
Last edited by cobba; 12-02-22 at 04:33 AM.
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12-02-22, 01:32 PM
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ignominious poltroon
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Thanks. That is exactly what I needed. My mistake was thinking it would be part of the brifter rather than the caliper (which I guess also explains why it didn't come in the box with the brifter).
In summary:
M9 corresponds to SB-BH90 I think, which is one of the two I ordered from Amazon.
In summary:
M9 corresponds to SB-BH90 I think, which is one of the two I ordered from Amazon.
12-02-22, 04:11 PM
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ignominious poltroon
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BH90/M9 arrived and appears to fit.
12-02-22, 04:22 PM
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Originally Posted by cobba
The recommended calipers diagrams for the GRX brifters show the parts you were probably looking for.
ST-RX600 / ST-RX815 - BR-RX810
https://si.shimano.com/en/pdfs/ev/BR...X810-4585B.pdf
ST-RX600 / ST-RX815 - BR-RX810
https://si.shimano.com/en/pdfs/ev/BR...X810-4585B.pdf
12-06-22, 12:08 AM
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Ordering from Amazon is a real joy. The first one didn't fit. An empty envelope (that's a first) for the other one.
I've now ordered what is hopefully the correct ones from a bike shop 3000 miles from here.
I've now ordered what is hopefully the correct ones from a bike shop 3000 miles from here.
