ROCKBROS Bicycle Bottom Bracket Ceramic Bearing Diameter BSA 68 73 MM 24-22mm For SRAM GXP DUB Shimano 6800 R8000 Crankset
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Specifications
- Brand Name
- ROCKBROS
- Origin
- Mainland China
- Use
- Mountain Bikes
- Model Number
- BSA24
- Material
- Aluminum Alloy, Ceramic Palin
- Applicable Axis
- 24mm-22mm
- Model BSA24
- About 68mm-73mm
- Weight
- About 78-100g
- For system
- Shimano/SRAM/GXP/SRAM-DUB Crankset
- Name
- Bottom bracket for SRAM MTB / Road Crank,
Product Description
Model:BSA24
Materil: Aluminum Alloy, Ceramic Palin
Applicable Axis:φ24mm/φ22mm
Five-way width:68mm-73mm
Weight: 100g
Fit for :
1.SRAM GXP road bike or MTB crankset,
2.Rotor 3D24,Aldhu24 crankset
3.shimano 5600/5700/6600/6700/6800/R8000 Crankset
Model:BSA30
Materil: Aluminum Alloy, Ceramic Palin
Applicable Axis:φ30mm/φ30mm
Five-way Width:68gmm-73mm
Weight: 78g
Fit for :
1.SRAM Rival 22/Force221/S9001/S952/BB30 crankset,
2.SRAM Red Quarq BB30 etc cranksets with 30mm diameter.
3.Rotor 3D/3D30/3DF /Aldhu etc cranksets with 30mm diameter.
Model:BSADUB
Materil: Aluminum Alloy, Ceramic Palin
Applicable Axis:φ28.99mm/φ28.99mm
Five-way width:68mm-73mm
Weight: 80g
Fit for :
SRAMDUB specification cranksets.
Pros & Cons
Pros
- Ceramic bearing construction reduces friction for more efficient, smooth pedaling
- Wide compatibility with major road and mountain bike crankset systems
- Fits most standard BSA bottom bracket shells from 68mm to 73mm
- Lightweight build that adds minimal extra weight to the bicycle
Cons
- Only compatible with 22mm and 24mm axles, not suitable for 30mm or larger axle systems
- No official brand warranty details listed in the product specifications
- Product description cuts off before fully detailing all compatible crankset models
- Variable weight range may lead to unexpected heft for precision-focused riders
Common Questions
What materials are used to construct this bottom bracket?
It is made from aluminum alloy and ceramic bearings for smooth, long-lasting pedaling performance.
What bottom bracket shell widths does this model support?
The BSA24 model fits 68mm to 73mm wide bottom bracket shells, the standard size for most road and mountain bikes.
Which crankset systems is this bottom bracket compatible with?
It works with SRAM GXP, SRAM DUB, Shimano 6800, R8000, Rotor 3D24, and Aldhu24 crankset systems.
What axle sizes does this bottom bracket fit?
It is designed for 22mm and 24mm bicycle axles.
What is the approximate weight of this bottom bracket?
It weighs between 78g and 100g depending on the specific configuration and components used.
Product information last updated on March 29, 2026