The MORTOP Bottom Brackets guarantee you the lowest friction, optimised power transfer, and longest product lifetime, helping you to save watts or ride faster. The combined with the smoothness of the balls results in virtually no wear on the bearing.

We are now applying our expertise and products to the world of cycling - no other performance component manufacturer comes close. It is the ability to use the World’s best race teams and riders to constantly develop and improve our products that gives us the winning edge over our competitors.

Material: Stainless Steel
Spindle specifictions: Bearings for 30mm spindle
Shell DIA: 41mm
Shell width: 86mm-92mm

BB4130SM is not suitable for Tapered Bearings.

In The Box
 Mortop  Bearings 
2 Dust alloy covers
2 1mm Ø30mm spacer 
5ml syringe of Nano lubricant