30407-2RS Ceramic Bearing - 30x40x7mm

The Definitive Performance Upgrade for DT Swiss & Campagnolo Hubs

Engineered to the exacting 30x40x7mm standard, the CRODER 30407 Ceramic Bearing is the premier upgrade for cyclists running high-performance hubs from iconic brands like DT Swiss and Campagnolo. Experience a tangible gain in rolling speed and all-weather durability.

• ✔Ultimate Rolling Efficiency: G5-grade ceramic balls provide a demonstrably smoother and harder rolling surface than steel, significantly reducing friction in your hubs to save watts and increase speed.
• ✔Swiss-Level Precision Fit: Manufactured to the precise 30x40x7mm dimension, this bearing is a direct-fit replacement for the specific bearings used in many legendary hubs, including the DT Swiss.
• ✔A True Performance Upgrade: Move beyond stock. This ceramic bearing is a dedicated upgrade designed to provide a faster, more responsive feel for your high-end wheelset.

Specifications

The 30407 bearing is the specified size for a number of high-performance wheel hubs. It is famously used in many hubs from DT Swiss and Campagnolo. As hub designs can vary by model year, always confirm the model number printed on your hub's original bearing before ordering.

Q : Why was the 30407 (30×40×7 mm) bearing developed?

A : Because traditional BB86 and BB92 bottom brackets couldn’t fit DUB (29mm) or 30 mm crank spindles properly, causing creaking and poor durability. The 30407 bearing was engineered as the perfect middle-ground size (30 × 40 × 7 mm) to solve this persistent compatibility issue.

Q : Which bottom brackets use the 30407 bearing?

A : The 30407 bearing is designed to bridge the gap between BB30 and Shimano standards, providing smooth and quiet performance for 30 mm and DUB cranksets. You can find it in our BB86/92 DUB or 30mm bottom brackets, available for both 30 mm and DUB spindle systems.

Q: How do you replace a DT Swiss hub bearing?

A: Replacing press-fit bearings in high-end hubs like those from DT Swiss requires specialized bearing press and extractor tools to avoid damaging the delicate hub shell. While there are many online tutorials, we strongly recommend that this service be performed by a qualified and experienced bicycle mechanic to ensure precision and longevity.