Product description
Shimano BB-ES51 Bottom Bracket 68mm BSA bottom bracket without crank bolts
Shimano original parts maintain the precision and function of the components for optimum performance, maximum safety and long durability.
QualityThe quality of Shimano original parts is impressive. Every part is extensively tested and inspected. Shimano's internal requirements are often higher than those of industry standards and norms. This brings safety and reliability.
Performance
The segmentation into groups clearly divides the performance according to the top-down principle. This clearly defines the respective Shimano performance level.
Compatibility
Only Shimano original parts fit perfectly to the Shimano components. The optimum accuracy of fit facilitates replacement and meets the highest demands in all respects.
Additional Information:
Size Overview Axle Length:
113 mm
118 mm
121 mm
126 mm
Hollowtech crank and Octalink bottom bracket axle mounts
Light cranks reduce the overall weight of the wheel and above all the rotating mass that is crucial for acceleration. The challenge is to reduce the weight of the crank without compromising stability and load-bearing capacity. Shimano's state-of-the-art forging technology provides an ideal solution with the Hollowtech crank. Precisely like a high-quality frame tube, the hollow arm crank handle is extremely stable and resilient at very low weight. The bottom bracket also contributes an important part to the stiffest possible crank. Hollowtech cranks are not connected to the bottom bracket by means of the traditional square cone, but by an octagonal toothing with a larger diameter, which engages the counterpart on the hollow shaft of the inner bearing. This system is called Octalink. This results in a stiffer crank/internal bearing bond.
QualityThe quality of Shimano original parts is impressive. Every part is extensively tested and inspected. Shimano's internal requirements are often higher than those of industry standards and norms. This brings safety and reliability.
Performance
The segmentation into groups clearly divides the performance according to the top-down principle. This clearly defines the respective Shimano performance level.
Compatibility
Only Shimano original parts fit perfectly to the Shimano components. The optimum accuracy of fit facilitates replacement and meets the highest demands in all respects.
Additional Information:
Size Overview Axle Length:
113 mm
118 mm
121 mm
126 mm
Hollowtech crank and Octalink bottom bracket axle mounts
Light cranks reduce the overall weight of the wheel and above all the rotating mass that is crucial for acceleration. The challenge is to reduce the weight of the crank without compromising stability and load-bearing capacity. Shimano's state-of-the-art forging technology provides an ideal solution with the Hollowtech crank. Precisely like a high-quality frame tube, the hollow arm crank handle is extremely stable and resilient at very low weight. The bottom bracket also contributes an important part to the stiffest possible crank. Hollowtech cranks are not connected to the bottom bracket by means of the traditional square cone, but by an octagonal toothing with a larger diameter, which engages the counterpart on the hollow shaft of the inner bearing. This system is called Octalink. This results in a stiffer crank/internal bearing bond.
At a glance
Features
The delivered product may have been produced earlier than the advertised model year.
Purpose
MTB Beginner / Tour, Marathon / Cross Country, All Mountain / Enduro, All-round / Beginner, Tour / Cross Country, Marathon / XC, All Mountain / Trail, Enduro, Road, Cyclocross, Gravel, Endurance, Trekking, Bike Travel, Cross, Every Day / Commuting, Lifestyle / Urban Biking, Everyday Cycling, Lifestyle / Single Speed, Urban Sports, Commuting
The delivered product may have been produced earlier than the advertised model year.
Main Information
Type:
Multiple Teeth
Assembly Width:
68 mm
The delivered product may have been produced earlier than the advertised model year.
Bottom Bracket
System:
Cartridge bearing
The delivered product may have been produced earlier than the advertised model year.
Compatibility
Thread:
BSA
The delivered product may have been produced earlier than the advertised model year.
Axle
Axle Clamp:
Octalink
The delivered product may have been produced earlier than the advertised model year.
Model Year
2023
The delivered product may have been produced earlier than the advertised model year.
Article number
279379
Customer opinions
Kevin
Not for intensive use
Translated from the Dutch
To the original
Only ridden a few trips off-road and again the same problem. Good for going shopping by bike but not for the harder work.
17.07.2022
Stefano
MTB bottom bracket
Translated from the Italian
To the original
Original product at a great price, very fast shipping.
02.09.2021