5Dev

Titanium T47 Internal Bottom - For 29mm Spindle

5Dev Titanium T47 Internal Bottom Bracket is a premium, service-friendly upgrade for riders running a 29mm spindle in a T47 internal-thread frame. CNC-machined titanium cups resist corrosion and maintain a precise fit, while the 6061 aluminum internal sleeve helps keep bearing alignment stable under hard pedaling and real-world impacts. Inside, XD-15 ceramic-hybrid ABEC-5 bearings are chosen for low-friction rotation and long-term durability when conditions get wet, gritty, or frequently washed.

Built to solve the real problems that end bottom brackets early

• T47 Internal Threaded Interface - Threaded cups install cleanly and stay quiet, with straightforward removal for routine bearing service
• CNC Titanium Bearing Cups - Corrosion resistance and high strength for year-round use, especially in wet climates and frequent wash cycles
• 6061 Aluminum Alignment Sleeve - Supports consistent bearing positioning to reduce drag-inducing misalignment and premature wear
• XD-15 Ceramic-Hybrid ABEC-5 Bearings - Smooth, efficient rotation with high wear resistance for high-miles trail and race bikes
• SRAM DUB / 29mm Compatibility - Fits SRAM DUB (28.99mm) and 5Dev crank spindles for a clean, modern drivetrain setup
• Complete Install Kit - Includes L/R titanium cups with pressed bearings, connecting tube, bearing washers, 1mm internal spacers, 2mm spacer, 3mm spacer, and anti-seize pouch; uses Park Tool BBT-47-16 for installation/removal (sold separately)