Shimano BB-UN300
17,23
Shimano BB-UN300
Gazelle JIS 128mm BB
20,28
Gazelle JIS 128mm BB
Sunrace BSA 68/122mm Steel
13,16
Sunrace BSA 68/122mm Steel

Shimano BB-UN300 vs. Gazelle JIS 128mm BB vs. Sunrace BSA 68/122mm Steel

Shimano BB-UN300
Gazelle JIS 128mm BB
Sunrace BSA 68/122mm Steel
Shimano BB-UN300

17,23

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Gazelle JIS 128mm BB

20,28

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Sunrace BSA 68/122mm Steel

13,16

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This is what our customers think

Reviews
(26)
-
(1)
Pros
Does what it needs to do (2x)
Affordable (2x)
price (2x)
Replaces old 20-year-old Shimano BB
-
easy to assemble
cycles like new
Cons
No (4x)
Vague manual
Special tool needed for installation
Not completely waterproof
-
special tool needed

According to the product specialist

Pros
This bottom bracket is easy to install yourself.
The bearings rotate smoothly and have a good durability.
Made of high-quality plastic and steel for durability.
Lightweight design with only 325 grams.
Round disc with cut-out for improved fit.
Suitable for bikes with a JIS axle type.
-
Cons
This bottom bracket is on the heavy side.
No wire, which may make assembly more challenging for some.
-

Specifications

Types Screw Thread
BSA
BSA
Suitable for
Race
MTB
Size
72 / 128 mm
Crankset axle fit
Square Taper
Square Taper
Square Taper
Colour
Black
Bottom Bracket Width
68 / 113 mm
68 / 122 mm
68 / 127 mm
68 / 110 mm
68 / 118 mm
73 / 113 mm
73 / 118 mm
73 / 122 mm
68 / 122 mm
Bottom Bracket Diameter
33.6-33.9 mm
30 mm
-
Yes
No
Suitable for type of bicycle
Roadbike / gravelbike / cyclocross bike
Frame material
Aluminium
Aluminium
Bottom Bracket Fit
External Threaded Bearings
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