Bottom Bracket Tool

Keep your drivetrain running smoothly with Lezyne bottom bracket tools, built for the jobs that demand precision and durability. Whether you are swapping out an external bottom bracket or tackling cassette lockring service, these shop-quality tools are made from forged and heat-treated steel to handle repeated use without flexing or rounding out. Lezyne’s thoughtful design puts reliable, component-specific functionality in your hands so you can work with confidence.

• Durable construction from forged, heat-treated steel for long-lasting shop-grade performance.
• Available in a CNC Alloy BB Tool 44mm 16-spline option for precise fit on compatible external bottom brackets.
• Also offered in a CNC Alloy BB Tool 39mm 16-spline option for other standard external bottom bracket interfaces.
• Convenient 2-in-1 combo tool combines an external bottom bracket tool with a cassette lockring tool in a single silver unit—saving space in your toolbox.
• Choose the exact option that matches your bottom bracket and service needs.