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Hollowtech II bottom bracket help

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Hollowtech II bottom bracket help


Old 01-12-19, 01:13 PM
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Hollowtech II bottom bracket help

I'm going to try to replace the bottom bracket on my 2015 Felt Z75 disc. I purchased a new bottom bracket which should fit, it is a shimano SM-BBR60. Based on this I think I need the Part tool BBT-59.2 to install it. My problem is that I'm not completely sure what the current bottom bracket is. It is a Hollowtech II like the new one, but the only number I find on it is BC1.37x24 road. The new bracket is black while the old on is more aluminum color. Will the same Park tool work for removal of the old bottom bracket?
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Old 01-12-19, 01:31 PM
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It will work. New and improved color.
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Old 01-12-19, 05:58 PM
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It depends on what model your current bottom bracket is. Earlier HTII bottom brackets used a 44 mm OD, 16-notch tool like the Park BBT69.2 or Park BBT-9. Newer HTII bottom brackets like your SM-BBR60 require a 41 mm, 16 notch tool like the Park BBT-59.2. So you may need one tools to remove the old one and a different one to install the new one. However, Shimano includes an adapter bushing with the BBR60 that lets you use a 44 mm tool to install it.
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