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30407-2RS Ceramic Bearing - 30x40x7mm

30407-2RS Ceramic Bearing - 30x40x7mm

【BALL】Grade 5 Ceramic
【WEIGHT】16g/pc
【SIZE】30(D) X 40(M) X 7(B)mm
【WARRANTY】One Year

NT$700
NT$650
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Description

The Definitive Performance Upgrade in 86/92 for dub/30 mm

  • ✔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.
  • ✔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

Item Specification
Inner Diameter (ID) 30mm
Outer Diameter (OD) 40mm
Width 7mm
Model 30407
Ball Material Grade 5 (G5) Silicon Nitride (Si3N4)
Frequently Asked Questions (FAQ)

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 : You can find it in our BB86/92 DUB or 30mm bottom brackets, available for both 30 mm and DUB spindle systems.

Shipping & Payment

Delivery Options

  • 7-11 Pickup only (C2C)
  • 7-11 Pickup and pay in store (C2C)
  • Air Express
  • Family Mart Pickup only (C2C)
  • Taiwan delivery

Payment Options

  • Apple Pay
  • PayPal Express
  • Credit Card
  • LINE Pay
  • Pay on 7-11 Store Pickup (C2C)
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