Bottom Brackets Shimano BB-ES300 Octalink Bottom Bracket.

Shimano BB-ES300 Octalink Bottom Bracket. Compare the power transfer of Octalink with the conventional square taper spindle, and the 8-splined Octalink interface that connects bottom bracket and crankset increases the strength and rigidity of the entire assembly.
Shimano manufactures a wide range of different cranksets and matching bottom brackets so that the optimum system will always be available for each kind of bicycle and riding style.

SPECIFICATIONS
Application: Cross Country, City & Touring
Type: Threaded
Shell Width: 68mm, 73mm, 70mm (Italian)
Axle Length: 113 mm, 118 mm, 121 mm, 126 mm
Axle Type: Octalink (MTB)
E-Type Compatibility: no
Chain Guard Compatibility: no

Technical Information:
Bearings: steel
Axle Material: steel
Bottom Bracket Cup Material: resin (left), steel (right)

Compatibility:
– FC-T521
– FC-T4010
– FC-T3010-8
– FC-M523
– FC-M522
– FC-M4000
– FC-M3000-8

Features:
– hollow pipe construction
– rigid and light for efficient power transfer
– 26 g lighter than BB-ES25
– quick and precise mounting
– asymmetric axle, mind the compatibility