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      • BSA30 Bottom Bracket MTB

      BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit allows you to fit 30mm...

      ×

      Coated BSA30 Bottom Bracket MTB

      BSA30 Bottom Bracket MTB

      BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit allows you to fit 30mm thru-axle cranks, like those from Rotor or RaceFace, to fit in the tight space of this 30mm spindle. 

      CeramicSpeed Coated Bearings are hand built with unique CeramicSpeed Ceramic Balls installed on coated, hardened-steel races for longer life and less bearing drag compared to standard bearings. 

      In The Box

      • 2 threaded cups with bearings installed.
      • 2 1mm spacers.
      • 2 0.5mm spacers.
      • Spacer tube
      • 2 dust covers.
      • O-ring
      • Long Life Grease.
      • Sticker sheet.

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CERAMICSPEED

Coated BSA30 Bottom Bracket MTB

SKU:

R 8,499.00
R 8,499.00
Sale Sold out
Tax included.
Size
×

Coated BSA30 Bottom Bracket MTB

SKU Size Color STOCK
106074 30mm spindle longer than 100mm Black Arrives in 7 days
Color
Black
*Product will arrive 7-10 days from order
View full details

BSA30 Bottom Bracket MTB

BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit allows you to fit 30mm...

×

Coated BSA30 Bottom Bracket MTB

BSA30 Bottom Bracket MTB

BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit allows you to fit 30mm thru-axle cranks, like those from Rotor or RaceFace, to fit in the tight space of this 30mm spindle. 

CeramicSpeed Coated Bearings are hand built with unique CeramicSpeed Ceramic Balls installed on coated, hardened-steel races for longer life and less bearing drag compared to standard bearings. 

In The Box

  • 2 threaded cups with bearings installed.
  • 2 1mm spacers.
  • 2 0.5mm spacers.
  • Spacer tube
  • 2 dust covers.
  • O-ring
  • Long Life Grease.
  • Sticker sheet.

TECHNICAL SPECIFICATIONS

English threading is easy to work with and the drive side cup, thanks to being reverse-threaded, stays in place without any extra effort. The threaded extension is thin, as they need to fit a 30mm spindle inside the cups.

The spindle increases efficiency, as is the CeramicSpeed system.
CeramicSpeed standard bearings typically have frictional drag of 0.3-0.4 watts per set. That’s in the range of a 75% drag reduction compared to standard bottom brackets. That’s thanks to balls that are 100% smoother and 15% harder than the ceramic competition. The bearings last at least 3x longer than other bearings.

Race Day Grease, All Round, and Long Life are three greases CS designed to help the bearings roll smoothly. The first is the least drag, the last is the most durable. All Round comes with. You can change the grease to tune performance.

INSTALLATION

Installation of BSA30 Bottom Bracket MTB

If you don't have any experience installing bottom brackets and bearings, we recommend that you have your local bike shop fit your new bearings. Find your nearest retailer. 

 

Installation of 30mm crank on CeramicSpeed Bottom Brackets

MAINTENANCE

Maintenance of CeramicSpeed Bottom Brackets

We recommend that you follow our instructions on how to maintain your CeramicSpeed Bottom Brackets to achieve the lowest friction and the best longevity. 

O-ring support

If you need instructions on a crank setup with no crank-based preload adjustment using an O-ring, then follow this link.