Wheels Manufacturing T47 (Inboard)

The Creak Killer.

This Wheels Manufacturing Bottom Bracket is the premium choice for riders with modern, wider T47-standard frames (like those from Factor, Trek, or Specialized). By tucking the bearings inside the bottom bracket shell, this "Inboard" design offers superior protection against road spray and debris while maintaining the rock-solid, creak-free performance that Wheels Mfg. is famous for.

Why the T47 Inboard BB is the Ultimate Choice:

• Internal Bearing Design: Optimized for wider 86.5mm–92mm shells, this design houses the bearings within the frame’s diameter. This results in a cleaner aesthetic and a narrower profile that offers maximum protection for your internal parts.

• Machined 6061 Aluminum Cups: Unlike plastic alternatives that can flex and creak, these cups are CNC-machined to exacting tolerances, ensuring a perfectly aligned, threaded interface that eliminates drivetrain noise.

• Enduro ABEC-3 Bearings: Outfitted with world-class Enduro Sealed Bearings, providing a silky-smooth spin and long-term durability against the elements.

• Protective Internal Sleeve: Includes a high-quality sleeve that bridges the gap between the cups. This not only keeps dirt out but also ensures your internal shift cables, brake hoses, and electronic wires never rub against the spinning crank spindle.

• User-Serviceable: Built for the long haul. The bearings can be easily removed, cleaned, or replaced without needing to discard the entire aluminum housing, making this a sustainable and cost-effective long-term investment.

Technical Specifications:

• Frame Interface: T47 Threaded (Internal/Inboard)

• Shell Width Compatibility: Typically 86.5mm, 90mm, 92mm, and wider.

• Material: 6061-T6 Aluminum (Black Anodized)

• Bearings: Enduro ABEC-3

• Tool Pattern: 48.5mm x 16notch (T47 Standard)

The Alegro Perspective: If your frame shell is wide, "Inboard" is the way to go. It offers the best protection for your bearings and gives your build that clean, pro-level look. In our shop, we use Wheels Mfg. for all our custom builds because it’s the only way to guarantee a dead-silent bike that performs as good as it looks.

Hidden Protection. Precision Power. Silence your Drivetrain with Wheels Manufacturing.

Setting up a new road or gravel frame? We can help you find a Wheels Mfg. T47 installation tool or some Park Tool PPL-1 grease to ensure your threaded BB is installed for a lifetime of silent service!