Unior 1671.8/2BI-US Cartridge Bottom Bracket Tool

The Unior 1671.8/2BI-US cartridge bottom bracket wrench fits and removes bottom brackets on many bikes. It is designed for drivetrain maintenance at home or in the workshop.

• Fits Shimano Octalink, Truvativ and standard square-taper cartridge bottom brackets
• Does not slip off the bottom bracket: the integrated dual-thread screw threads into the spindle
• More leverage to loosen stubborn bottom brackets, with a 350 mm arm
• Two-component handle for greater comfort when applying force
• Premium Flex Plus carbon steel, designed for frequent use

Technical specifications

• Material: Premium Flex Plus carbon steel
• Arm length: 350 mm
• Handle: Two-component
• Compatibility: Shimano Octalink, Truvativ and standard square-taper cartridge bottom brackets
• Securing mechanism: Integrated dual-thread screw that threads into the bottom bracket spindle
• Intended use: Drivetrain
• Colour: Red-silver

Unior was founded in 1919 in Zreče, in present-day Slovenia, where it is still based. For bicycle care, it makes tools, repair stands and wheel equipment. Its name, adopted in the 1970s, comes from the expression “universal tools” and reflects its roots in metalworking.