Park Tool BBT-10.2 Crank Adjusting Cap Tool
Park ToolBBT-10.2 Crank Adjusting Cap Tool

Crank on.

Instead of the plastic tool Shimano includes with its Hollowtech II crank/bottom bracket systems, use Park Tool's BBT-10 Crank Adjusting Cap Tool to remove and install the adjusting cap. Made from investment cast steel, the BBT-10 provides strength and leverage to easily remove seized caps or make small adjustments.

  • Easily adjust your Hollowtech II cranks
  • Strong, durable, investment cast steel
  • Compatible with an 8mm hex for added leverage
  • Built in safety plate hook
  • Reviews
  • Q & A


  • Familiarity: I've put it through the wringer

A must have tool for service when taking off shimano cranks.

one to have

  • Familiarity: I've used it several times

if you run shimano cranks get one to keep in to toolbox. it will save you time and headache at some point.

One of my favorite tools in the toolbox

  • Familiarity: I've put it through the wringer

The original BB10 was a great tool, and one of my favorites. Adding the prong to remove the safety clip from shimano cranks was brilliant and makes the tool honestly perfect in my opinion. Great if you spend a lot of time working on shimano hollowtech II style cranks.

compact and functional

  • Familiarity: I've used it several times

I'm building a travel bike for airline accessed riding and using some left over but still good parts to complete the build--including an XT hollowtech crankset that requires this type of tool for install. Bought this tool so it can go in my travel kit for bike assembly and disassembly. Pleased at the small size and being metal construction--iit will have durability to bounce around airports in my travel case and still function properly when needed. Great for you home mechanic tool kit too. Get one.