Wolf Tooth Bottom Bracket - External | T47-68/73-DUB - ultraviolet purple

Wolf Tooth T47 External bottom brackets are engineered to be smooth, durable, lightweight, fast, and user-serviceable. The Wolf Tooth ground-up design features custom bearings, seals, bushings, and cups, which eliminate creaking and balance best-in-class weather sealing with optimized bearing radial compression, alignment, and preload for low drag. They're available for 24mm Shimano, 29mm DUB, and 30mm spindle diameters for maximum compatibility, and four colors to match your other Wolf Tooth Color Shop components.

The bearings in Wolf Tooth bottom brackets feature a custom design. The balls and race are made from a hardened chrome bearing steel. This has a higher surface hardness than stainless, which improves the durability of bearing races and reduces spinning resistance and noise. An ACOSUR ZNA coating has also been applied to the race to provide corrosion resistance that is equal to or better than stainless steel after a 500-hour saltwater test. Bearing material paired with an extensive sealing system and the elimination of metal-on-metal contact means Wolf Tooth bottom brackets have superior performance in all conditions.

Features of Wolf Tooth T47 bottom bracket:

• precisely manufactured and maintenance-friendly design
• seal protects the bearings from water, mud and deposits
• specially developed polymer bushing prevents cracking
• compatible with 29 mm DUB spindles
• adjustable-width sleeve fits 68mm - 73mm T47 bottom bracket shells
• easy installation with standard tool (46-12 splines)
• manufactured and assembled in Minnesota, USA
• spare parts and detailed service/installation instructions available via Wolf Tooth Right to Repair
• lifetime manufacturer's warranty on bearings

The bottom bracket is supplied with the following spacers:

• for the shell: 2x 2.5 mm
• for the spindle: 2x 0.5 mm, 2x 1 mm, 1x 3/5/7.5 mm