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PF4630 - Coated

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Current price: $383.20 Original price: $479.00
20% off

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Thanks to the advent of oversized press fit shells, we can all reap the benefits of lighter and stiffer bicycles. Take Pressfit30 shells, for instance, it's allowed frame builders the opportunity to build beefier bottom bracket shells and take advantage of larger diameter, 30mm crank spindles. While adding stiffness and dropping weight is always the goal of cycle design, an often overlooked area is reducing friction. Now you too can capitalize on the industry-leading bearings from CeramicSpeed with its PF4630 Coated bottom bracket allowing you to take full advantage of the improved power transfer and lightweight design afforded by PF30, 386EVO, and BBright paired with the silky smooth spinning of ceramic ball bearings. Enjoy the added speed at the same effort, or the ability to squirrel away some energy savings until you're ready to launch your big attack with this bottom bracket. This version features coated races for an impressive 50% drag reduction and 60% better durability than its already impressive standard ceramic bottom brackets.

Reducing friction not only saves watts, allowing you to ride faster with less effort, it helps the component last longer. The Danes at CeramicSpeed are downright obsessive in its quest to reduce friction which is why it offers bottom brackets for almost every bottom bracket and crank standard on the market. And if you loathe friction as much as the crew at CeramicSpeed and want to optimize your bike to go fast with little-wasted effort, upgrade your bike with one of its bottom brackets and enjoy reduced friction as well as better resistance to contamination and corrosion. CeramicSpeed is so certain in this increased durability of the coated version that it adds a full two years to its standard ceramic bearing warranty for a total of 6 years.

Compared to steel ball bearings, CeramicSpeed's balls resist corrosion, which is in part responsible for why bearings start to feel gritty as they age as well as causing the bearings to run hotter reducing the lifespan of the component. CeramicSpeed balls are also much harder than standard steel balls. Apply enough pressure to a steel ball and it will crack under load while under that same load the CeramicSpeed ball won't flinch, maintaining the exact surface finish and roundness which could affect spinning smoothness. Meanwhile, these non-round and rough ball bearings create increased friction and begin to quickly wear down the steel bearing races.

CeramicSpeed is able to achieve such high marks because it uses the highest quality Grade 3 Silicon Nitride for its bearings. Don’t be fooled into thinking that all ceramic bottom brackets bearings on the market are the same. In testing, CeramicSpeed claims its balls are 15% harder, can take 99% higher loads, and are more than 100% smoother than other ceramic balls typically used on the market. Included with the bottom bracket are dustcovers, special grease for maintenance, and a sticker sheet.


  • Smooth ceramic BB bearings drop the drivetrain's friction
  • Fits 30mm spindle cranks to PF30, 386EVO, and BBRight shells
  • Ceramic balls are harder, rounder, and better resist corrosion
  • Grade 3 Silicon Nitride ceramic bearings offer smoother spinning
  • Aluminum with anodized black finish house the ceramic bearings
  • Enjoy the same friction fighting the pros count on
  • Coated version further boosts smoothness and durability
  • Item #CMD000Y
[cups] aluminum, [bearings] ceramic
Shell Type
PF30, BBRight, 386EVO
1 BB assembly, 1 blue grease syringe
Manufacturer Warranty
6 years

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