External Bottom Bracket (BB1)

External Bottom Bracket (BB1)

Color: Black,Red,Blue,Gold.

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.

Mortop`s Bottom Brackets change the locking method to internal for ISIS SYSTEM TOOL in both ends. it is not only lighter and thinner but also to solve the problem of easily wearing appearance.

-Material: CNC Durable Forged Alloy 7075 cups.
-Compatible for Shimano.
-BCA-1.37" x 24T for Road to fit 68mm Shell.
-BSA-1.37" x 24T for MTB to fit 68/73mm Shell
-Plastic center sleeve with double o-ring seals.
-Seal bearing with 2*O-rings.
-Ceramic bearing with 2*O-rings.
-Weight: 75 grams.

-Compatible for Sram
-Separation parts:1*24mm reduce to 22mm spacer, 2*wave spring,2*0.5mm spacer, 2*0.3 spacer.