PressFit 41mm Angular Contact Fat Bike BB for 24mm Cranks - Black

Threaded angular contact bottom bracket for Fat Bike PF41 (BB121) and 24mm spindle diameter cranks. Machined cups thread together for stability, increased bearing life, and simple installation and maintenance. No more creaking. Smooth operation. Fast bearing replacement.

 

Precision Machined

  • Bearings: Enduro Angular Contact
  • Color: Black
  • Bottom Bracket/Frame Interface: PF41 - BB121
  • Bottom Bracket Shell Width (mm): 105mm-132mm
  • Bottom Bracket Shell I.D.: 41mm
  • Crank Spindle Type: Shimano Hollowtech II, FSA MegaExo, RaceFace EXI
  • Crank Spindle Diameter: 24mm
  • Tool Interface: 48.5mm, 16-notch
  • Weight: 120g
  • Packaged for retail display

This is a fat bike bottom bracket! Your frame must have a 41mm inner diameter, with a width of 121mm.

Compatible with the following Bottom Bracket Standards:

  • PF41 - BB121

Compatible Crank Spindle Type: FSA MegaExo, RaceFace EXI (24mm spindle diameter)

Enduro Angular Contact Bearings

Enduro Angular Contact Sealed Bearings

Enduro Angular Contact bearings are specifically designed for hubs and bottom brackets. In standard radial bearings, only 3 or 4 balls make contact during the load, at any given time. In Angular Contact bearings, ALL balls are engaged and spread the force over a larger surface area, to decrease friction, and minimize wear.

Grade 5 Chromium Steel Balls:

  • High precision balls are within 5/1,000,000″ round. These are military level specification, used for precision equipment. R-64 hardness, of the highest grade.

52100 High Carbon Chromium Alloy Races:

  • Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for ABEC-5 precision and noiseless movement.

Graphite/Nylon Ball Retainers:

  • Nylon with graphite retainers are virtually frictionless while providing constant lubrication.

Filled with Rheolube special synthetic grease formulated in the USA, the balls are micro-coated with long lasting protection from friction. "LLB" dual lip groove seals and another external seal with dual lips on both sides and made from the best Silicone material guards from water and dirt penetration.

We back them up with a 1 year warranty.*

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