Caliper bolts - Yamaha R3 Forum
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post #1 of 7 Old 02-26-2019, 08:19 AM Thread Starter
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Caliper bolts

What are the front brake caliper mounting bolt dimensions,
Specifically bolt size, thread pitch, length of thread, shoulder length?
I am without a garage work area at this time. I would like to replace these OEM button torx head bolts with S/S hex or allen but need the dimensions to order.
Thanks
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post #2 of 7 Old 02-27-2019, 01:17 PM
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Not sure the specs but if you don't want those pesky T50 Torx bolts you can always go titanium

https://www.yamahar3racing.com/produ...brake-caliper/
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post #3 of 7 Old 02-27-2019, 04:57 PM Thread Starter
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Thanks, however I am in Jalisco, Mexico so I need to pick something up at the bolt store here. Guess I will have to try to remove one to take it in. Problem is tool access like an impact driver to free it up.
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post #4 of 7 Old 02-27-2019, 09:33 PM
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Donít be tempted to NOT use the impact. The risk of snapping a bolt is no longer something Iím willing to take anymore, after ruining a perfectly good 650 rim a few years ago.
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post #5 of 7 Old 02-27-2019, 10:39 PM
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I took mine off pretty easily with a T50 socket and a breaker bar. Torque spec is only 25 lbft or 35 Nm
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post #6 of 7 Old 02-28-2019, 08:44 AM Thread Starter
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I brought T50 with me from the states, harbor freight. Used it twice but the hardness was so poor it twisted like a pretzel. We have an Autozone nearby so maybe I can find a good socket there without having to buy a kit. Not common here for mechanics to keep Torx tools. Most do not even have metric tools,
I am on the hunt today for a new T50
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Last edited by kiko; 03-02-2019 at 07:47 AM.
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post #7 of 7 Old 03-02-2019, 07:47 AM Thread Starter
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Found a mechanic with a Craftsman Torx50. Popped right off .. ezy pzy. Local bolt store had the 10mm fine bolts with a big fat 17mm hex head. 8.8 hardness. Now ready for fresh fork oil.
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