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Park ToolBBT-47 Dual Sided Bottom Bracket Tool


Item # PAR007Q

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  • Blue, One Size ($55.95)
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Item # PAR007Q

BBT-47 Dual Sided Bottom Bracket Tool

Install and remove your Enduro T47 and PF30 or Chris King Threadfit 47 and 30 bottom bracket with ease with the precision CNC machined, aluminum Dual Sided Bottom Bracket Tool from the pros at Park Tool. One side features a 12-notch tool that works on 52.2mm external bearing bottom brackets while the other is for 16-notch 50.4mm cups. The Park blue anodized finish with laser engravings makes for easy identification and it uses a square 3/8-inch drive to fit ratchet or torque wrenches. Our favorite feature? Well, that's the extendable guide sleeve that fits inside the bottom bracket for precise alignment and less rocking on low profile cups.

  • Park's BB tool for some T47, PF30, and threaded external cups
  • Works with 16-notch 52.2mm OD cups and 12-notch 50.4mm OD cups
  • Anodized blue and laser engraved for easy identification
  • 3/8-inch drive works with rachets and torque wrenches

Tech Specs
Compatibility[Enduro T47] 16-notch, 52.2mm OD cup, [Enduro PF30] 16-notch, 52.2mm OD cup, [Chris King ThreadFit T47] 12-notch, 50.4mm OD cup, [Chris King ThreadFit 30] 12-notch, 50.4mm OD cup, 3/8in drive
Recommended Usebike maintenance
Manufacturer Warrantylimited lifetime

What do you think about this product?


>Rating: 2

Works but flawed design

This tool is well constructed and attractive. I picked it up to install a Wheels Manufacturing inboard bearing T47 BB in my new frame. I've used BB tools of a similar design (i.e. a cup-like splined tool to be used with a socket or torque wrench) before, with mixed results. While these type tools fit the splines on the BB cups just fine, the flaw is that when it comes to applying final torque with a wrench attached, it's very difficult to keep the tool aligned with the splines without it rotating off. Unless you're careful (and have enough strength to simultaneously hold the tool aligned with the splines while applying torque) the BB cups are scarred by the tool and the edges of the splines rounded off. It's just not a good design. That said, part of the fault also lies in the design of the BB, as well, since the splines are only about 1.5mm deep--just not enough material to facilitate good engagement. Regardless, I think tools like the BBT-9 are much easier to keep in place while applying torque because you don't need to simultaneously apply force in two directions. I found out after ordering this that Wheels Manufacturing makes such a tool (double ended BB tool), which is also half the price of this one. I would recommend going that route--if I'd found it earlier, I certainly would have. My install resulted in a marred BB cup and a big paint chip on my downtube from the tool flying off the BB because I was unable to keep the splines engaged while applying torque. Real bummer.