Wolf Tooth T47i Bottom Bracket

Wolf Tooth T47 Internal Bottom Brackets are engineered to be smooth, durable, lightweight, fast, and user-serviceable. Wolf Tooth's ground-up design features custom bearings, seals, bushings, and cups, which eliminate creaking and balance best-in-class weather sealing with optimised 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 Colour 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

• T47 Internal Bottom Bracket: Wolf Tooth T47 Internal Bottom Brackets are engineered to be smooth, durable, lightweight, fast, and serviceable at home. Wolf Tooth's ground-up design features custom bearings, seals, bushings, and cups, which eliminate creaking and balance best-in-class weather sealing with optimised bearing radial compression, alignment, and preload for low drag
• Best-In-Class Sealing, No Sacrifice In Speed: Thoughtfully engineered sealing is designed to balance low drag with superior performance in all conditions. The grouping of a spindle o-ring, seals on the bearing /bushing gutter, inner and outer low contact bearing seals, shell o-rings, and a labyrinth-style end cap ensure your bottom bracket will run smoothly no matter what conditions you ride in
• No Creaks: Custom bushings separate the bearing inner race and crank spindle to eliminate metal-on-metal contact, the leading cause of bottom bracket creaks. This bushing also helps enhance bearing longevity with an interface to the bearing gutter seal for maximum weatherproofing. No metal-on-metal contact, no creaks. It's simple

Specification

• Compatible with 24mm, 29mm DUB, and 30mm spindle cranksets
• Adjustable-width sleeve fits 85.5mm - 92mm T47 Internal bottom bracket shells
• Best-in-class weather sealing protects bearings from water, mud, and debris
• Custom polymer spindle bushings eliminate creaking
• Installation and removal with standard 52-16 spline tool
• Replacement parts and service guides available via Wolf Tooth Right to Repair
• Engineered, machined, and assembled at Wolf Tooth HQ in Minnesota, USA
• Lifetime warranty on the bearings

Bottom brackets ship with the following shell and spindle spacers:

• 2x 2.5mm shell spacers
• 24mm spindle: 2x 0.5mm, 2x 1mm, 2mm, 3mm & 5mm
• 29mm spindle: 2x 0.5mm, 2x 1mm, 3mm, 5mm & 7.5mm
• 30mm spindle: 2x 0.5mm, 2x 1mm, 2mm, 3mm & 5mm