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4 Questions : 4 Answers

Q&A for Chainring Bolts category

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Sizes

What is the correct way or simplest way to measure which bolt you need?
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2 months, 4 weeks ago
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Saint Hilaire en Lignieres,FR
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Answer: 
Ideally the area of contact width is what needs to be measured. Measure first the width of the tab on the crank spider, the width of the chainring then add 2 - 4mm to account for the flange on the chainring bolt.

For reference the approx sizes are as follows:

Inner Chainring - 6mm
Single Ring (eg 1x10) - 8.5mm
Standard Chainring (Double, Triple etc) - 10mm
Oversize Chainring/spider - 11mm to 15.5mm
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2 months, 3 weeks ago
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From shimano triple to double

I have an slx crankset with 24/32/42 chain rings. I want to remove the 42 tooth chain ring which will leave me with the small and middle chainrings. What chain ring bolt sets will work with the middle ring only?

6.5mm does look close to the right length (I haven't dismantled it to confirm) - are all the bolts diameters the same?
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2 months, 1 week ago
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Answer: 
Standard bolts all run a 10mm diameter, yes. For a single ring mounted on the outer tabs you can use the Narrow outer bolts linked below.
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2 months ago
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Chainring bolts

Can this fix it crack shimano M552 ?
1 month, 2 weeks ago
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Singapore,SG
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Answer: 
The Shimano M552 crank requires Shimano Non-Drive Replacement Crank Arm Fixing Bolt #Y1F811100. You should be able to source this part via your local Shimano dealer, or with a quick search online.
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1 month, 1 week ago
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Bolt for Race Face Turbine 10 v 40-28

I have a Race Face Turbine crank 10v 40/28 and looking for the kit spare screws,
those that hold the outer ring 40.
They are good both original and aftermarket. Let me know, I have to make the order as soon as possible!
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6 days ago
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Answer: 
The item attached should be suitable to hold on the outer chainring.
 
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4 days ago
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