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.

Your frame must have a bottom bracket shell inner diameter of 41mm and width of 121mm.

 

Precision Machined

  • Bearings: Enduro Angular Contact
  • Color: Black
  • Bottom Bracket/Frame Interface: PF41 - BB121
  • Bottom Bracket Shell Width (mm): 121mm
  • Bottom Bracket Shell I.D.: 41mm
  • Crank Spindle Type: Shimano Hollowtech II, FSA MegaExo, RaceFace EXI
  • Crank Spindle Diameter: 24mm
  • 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.*

Life expectancy of Wheels Mfg bottom brackets and bottom bracket sealed bearings depends on factors like frequency of use, environmental conditions and intended use. It is important to maintain bearings to increase lifespan. Please see the section How to maintain sealed bearings for more information.

Extent of Limited Warranty

Wheels Mfg warrants its Bottom Bracket components to be from defects in materials or workmanship for a period of 2 years after original purchase. Bearing warranties are as follows.

  • Enduro Sealed bearings - standard ABEC-3 or ABEC-5. NO warranty.
  • Enduro Sealed bearings - Angular Contact, Angular Contact Ceramic, Ceramic Hybrid or ZERØ Ceramic Hybrid. 1 year warranty against defects in workmanship or materials.
  • Remaining Wheels Mfg Bottom bracket components - 2 year warranty against defects in workmanship or materials.

This warranty only applies to the original owner and is not transferable. Claims under this warranty must be made through the retailer where the Wheels Mfg component was purchased. Original proof of purchase is required.

Limitations of Warranty

This warranty does not apply to products incorrectly installed and/or adjusted according to the respective Wheels Mfg installation instructions/owner manual. The Wheels Mfg manuals can be found online at wheelsmfg.com. Failure to use correct installation or removal tools will result in damage not covered by warranty.

This warranty does not apply to damage to the product caused by crash, impact, abuse of the product, or unusual installations resulting in subjecting the product to excessive forces or loads beyond its design.

This warranty does not apply when the product has been modified.

This warranty does not apply to normal wear and tear. Wear and tear parts are subject to damage as a result of normal use, failure to service according to Wheels Mfg recommendations, and/or riding in conditions or applications other than recommended.

This warranty does not apply to improperly maintained bearings, in accordance with the Wheels Mfg bearing maintenance information found online at wheelsmfg.com

Wear and Tear bottom bracket parts are identified as:

  • Dust seals
  • O-rings
  • Stripped threads
  • Corrosion
  • Bearing races

Exchanging a Wheels Mfg Bottom Bracket

Warranties only apply to the original owner and are not transferable. Claims must be made through the retailer where the Wheels Mfg component was purchased. Original proof of purchase is required. If original retailer is unavailable, exchanges or claims can be made direct to Wheels Mfg. Direct contact is required before shipping back product and original proof of purchase is required. Email us (customerservice@wheelsmfg.com) or call (1-800-361-8422) for a Return Authorization number Freight charges to Wheels Mfg. are the responsibility of the customer.