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Tektro hose barb wrong dia for hose interior

Old 06-18-23, 09:24 AM
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Tektro hose barb wrong dia for hose interior

Was installing a brake last night (HD-R510) and had to stop because the Tektro hose barb (purchased separately kit BR1641) was a loose fit within the Tektro hose. The hose itself has no markings I can find - it was an OEM take-off. Everything else measures right. It's a 5.5 mm hose and a 5.5mm labeled parts kit, the caliper says the end of the nipple is the same size, the olives are the same. The barb diameter measures about 2.3mm. I don't have pin gauges for the hose and haven't had much luck measuring it with the caliper, but it's definitely a rattle-fit. What kit do I need? Should I just get a complete hose kit so I know it all matches?
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Old 06-18-23, 05:10 PM
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Try a Shimano barb and Tektro olive.
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Old 06-18-23, 09:25 PM
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Why would I buy a second wrong thing? They are not the same despite Tektro using older Shimano compatible pads
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Old 06-18-23, 09:52 PM
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I've mixed TRP (Tektro) and Shimano stuff before, and if my memory serves, that is what was needed to keep it from leaking.

Edit: I read your post to mean you did not know the origin of the hose (and I guessed it might be Shimano, based on a similar experience where I knew the make of the hose).

The safest thing to do is replace the hose with a new Tektro one, and use all Tektro parts. If that doesn't work, I am at a loss.

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Old 06-19-23, 07:33 AM
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since the OP suggested "get a complete kit" yes that would be my suggestion

there may be "mountain" and "road" hose diameters, all different in the name of market segmentation, and you may be mixing components across kit types

but what do I know ?

/markp
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Old 06-19-23, 04:36 PM
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I suspect your hose requires shimano barbs. Thats what've I've ran across before.
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Old 06-19-23, 04:48 PM
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Originally Posted by Troul
I suspect your hose requires shimano barbs. Thats what've I've ran across before.
That was my guess (based on my own experience). It is cheap enough to try.
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Old 06-20-23, 08:28 AM
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It would be nice if the Shimano was the same. It might work if you jammed it in there real good. But that's not how we do if we can avoid it, right? This is not French bike-boom stuff, we can buy the right thing
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Old 06-22-23, 03:22 PM
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Excellent response from Tektro customer service!

​​​​I know what the issue is, QBP has not labeled that 10 pack correctly and it is specifically for our #50 hose which has a 5.5mm outer diameter but a 2.2mm inner diameter rather than a 2.5mm inner diameter. I can send out the correct barbs today. What is your address?





Thank you,

Sales and Customer Service

TRP Cycling Components I TEKTRO USA

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Old 06-23-23, 07:20 AM
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I guess, those of us that recommended a kit or the shimano barbs were technically correct in providing a solution. The barbs really would be best installed using a dedicated small hand press tool (often sold with the bigger kits) .
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