Threaded MTB ZERØ Ceramic BB for 24mm Cranks (Shimano) - Red

$150.00

(MSRP):  $175.00

SKU: BB-MTB-14

In stock

  

Threaded BB InstallationExternal English (BSA) threaded bottom bracket for 73mm shells. We use only Enduro bearings and silicone seals for the most durable and smoothest bottom brackets available. Fully serviceable.

Includes:

  • (2) - Enduro Silicone dust seals
  • (2) - 2.5mm aluminum BB cup spacers for use with 68mm wide BB shell
  • (2) - 0.5mm crank spindle spacers
  • (2) - 1.0mm crank spindle spacers

 

Direct replacement for Shimano HollowTech II bottom brackets!

Precision Machined in the USA

 

Frequently Bought Together

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Price for all selected : $172.00

  1.    This itemThreaded MTB ZERØ Ceramic BB for 24mm Cranks (Shimano) - Red
  2.    Wheels Mfg Double End BB Wrench, 48.5mm / 44mm

Specifications

  • Bearings: Enduro ZERØ Ceramic
  • Color: Red
  • Bottom Bracket/Frame Interface: ISO/English or BSA Threaded (1.37 in x 24 TPI)
  • Bottom Bracket Shell Width (mm): 68-73mm
  • Bottom Bracket Shell I.D.: 33.6-33.9 mm
  • Crank Spindle Type: HollowTech II (Shimano, FSA, Etc.)
  • Crank Spindle Diameter: 24mm
  • Weight: 98g
  • Packaged for retail display

Bearing Info

Enduro ZERØ Ceramic Bearings

The ZERØ ceramic bearings have ceramic balls and steel races.  The balls are Grade 3, Silicon Nitride (Si3n4).  These are the roundest balls you can buy without a military license.  The races are treated with a black oxide coating, which helps prevent rusting in the bearing. The races are then reground to a mirror finish after this treatment. Finally, they are cryogenically treated for strength before assembly. We also use Silicone VV seals, which is the lightest drag seal available on the market.

Si3N4 balls with 52100 High carbon Chromium Alloy Races with Cryogenic Treatment:
 Cryogenic treatment takes the races down to minus three hundred degree Fahrenheit to normalize the crystalline structure of the material so the races will resist the hardness of the ceramic balls and get the maximum wear potential

  • ABEC-5 rated Ceramic Hybrid bearing with Grade 3 balls
  • Cryogenically treated races will outlast any other bearing on the market
  • Dual lip, groove type seals keep dirt out and 90% fill rate grease in
  • Rheolube special synthetic grease is long lasting and protects against contamination
  • USA made balls are micro-coated with long lasting protection from friction

We back them up with a 1 year warranty.*

DOWNLOAD: Threaded Mountain ZERØ Ceramic Shimano BB Installation / Warranty Download PDF File

Required Tools

  • (WRENCH-BB48-44) Wheels Mfg Double End BB Wrench, 16-notch BB tool - 48.5 / 44mm

Installation

Compatibility

Compatible with the following Bottom Bracket Standards:

  • ISO/English or BSA Threaded (1.37 in x 24 TPI)
  • 73mm BB Shell Width

Compatible with the following cranksets with 24mm spindle diameter:

  • Shimano HollowTech II
  • FSA
  • RaceFace EXI, X-Type, MegaExo
  • Rotor 3D, Agilis
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