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Unior Bottom Bracket Socket 1671 16 Notch
16 Notch
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Unior Bottom Bracket Socket 1671

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A Departure From Unior's Normal Approach - But With Good Reason

Unior has always focused its efforts on steel tools.

As suppliers to some of the world's most demanding industries, places where tools see all sorts of abuse and torques and stresses, they knew steel was the only option if a bike tool was going to be made to last. When it came time to design a line of bicycle tools, they stuck with what they knew, even if the materials and designs used were going to be overkill for the demands of the typical bicycle mechanic.

But when it came time for the brand to create a line of bottom bracket sockets, they took a closer look at the stresses involved in freeing even the most stubborn bottom bracket cup and decided that aluminum, though a departure from its normal manufacturing processes, would be a better material.

The result is the Unior Bottom Bracket Socket, which is designed around a 1/2" ratchet so it can be used with a torque wrench, ratchet handle, or even a big breaker bar for those really stuck cups.

Meanwhile, a knurled edge on the outside of the socket affords ample grip and purchase when installing or removing a bottom bracket by hand.

Unior Bottom Bracket Sockets are CNC-machined for a high precision fit, keeping your bottom bracket cups looking fresh. After machining, they're anodized red and laser-etched with the bottom bracket compatibility each tool is designed for.

The T47 model has adapters to fit both 29mm and 30mm inner diameter bottom bracket bearings.


  • CNC machined
  • Made of aluminum billet and anodized red for durable finish and precise fi
  • Won't damage aluminum external bottom bracket cups
  • Knurling on the side of the socket creates better grip when threading cups by hand
  • 1/2" square drive makes it easy to use with torque wrenches, ratchets and fixed handles
  • T47 double sided bottom bracket socket features 16 and 12 notch interface with exchangeable adaptor to cover all different T47 bottom bracket standards.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.



Tool Type: Bottom Bracket Tools 

16 Notch

Mfg PartNum: 627623 

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