Ceramic Bearings Press Fit BB386-24 Bottom Bracket for Shimano Full Range of Cranksets SRAM GXP Road Bike or MTB Crankset 24mm.
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Specifications
- Brand Name
- KACTUS TECH
- High-concerned chemical
- None
- Origin
- Mainland China
- Material
- Aluminum/Alloy, Aluminum Alloy,Ceramic Palin
- Model Number
- BB386-24
- Use
- Mountain Bikes
- Bearing
- Ceramic Bearing
- Ceramic Beads
- G3 Silicon Nitride
- Applicable Axis
- 24mm/22mm
- Five-way Width
- 68mm-73mm
- Shell width
- 86.5mm-92mm
- Press diameter
- 46mm /46mm
- Weight
- About 103g
- Color
- Red,Black
- Use 2
- Both Road and Mountain Bicycles
- Fit for 1
- Shimano full range of cranksets
- Fit for 2
- SRAM GXP road bike or MTB crankset
- Fit for 3
- Rotor 3D24,Aldhu24 crankset
- Fit for 4
- other brand of crankset with shaft diameter 24mm
Product Description
KACTUS:Ceramic Bearing Bicycle Bottom Bracket BB386-24
Fit for :Shimano full range of cranksets,SRAM GXP road bike or MTB crankset,Rotor 3D24,Aldhu24 crankset and other brand of crankset with shaft diameter 24mm.
Tips:Please pay attention to the axial length of the chainring when the shell width is 68-73.
About G3 Silicon Nitride Ceramic Beads ：It highlights the higher strength and impact resistance characteristics of Si3N4, making it better than metal bearings, Secondly, their better wear resistance and heat resistance, light weight and smoothness, reducing friction and making the cranksets smoother during rotation. Be loved and recommended by cycling enthusiasts.
Brand:KACTUS TECH
Name:Bicycle Bottom Bracket
Model Number:BB386-24
Color:Black ,Red
Material:Aluminum Alloy,Ceramic Palin
Weight :About 103g（Weight does not include accessories）
Shell width:68mm-73mm/86.5mm-92mm
Applicable Axis:φ24mm /φ22mm
Press diameter:φ46mm /φ46mm
CNC Machining Process
Heat treated CNC process Guaranteed strength Lightweight at the same time.
G3 Ceramic Bearing
1.Ceramic bearings are installed in cups.
2.High quality G3 silicon nitride ceramic beads and hardened-steel races.
3.G3 Silicon nitride ceramic beads ,it highlights the higher strength and impact
resistance characteristics of Si3N4, making it better than metal bearings, Secondly,
their better wear resistance and heat resistance,light weight and smoothness,
making the cranksets smoother during rotation. Be loved and recommended by
cycling enthusiasts.
4.Low operating noise.
Lightweight Design
The shell is made of high-strength aluminum alloy material, integrally formed, and
anodized, which increases the hardness and wear resistance of the product and
extends the service life of the product.
Free Adjustable Pads
Easy to adjust the centerline distance of the chain of the crank disc
Note: The number of each gasket varies according to actual needs
Bottom Parts
Lightweight aluminum alloy is not easy to deform
Anodizing treatment increases product hardness and wear resistance, and has good stability.
Multicolor Options
Two colors of the product can be selected, you can choose according to your
preferences there is always one suitable for you.
Laser Tech
Laser etching technology, clear handwriting, good quality.
Bearing dust cover
Effectively prevent dust or other foreign matter from entering the bearing, and ensure the smooth use of the bottom bracket.
Product physical photos
The product is taken in kind and displayed from multiple angles, showing you
more different product scenarios
Note: Due to different batches, the factory will replace the outer packaging of
the product, please refer to the actual receipt!
Pros & Cons
Pros
- Ceramic silicon nitride bearings for smooth, low-friction pedaling and long-term durability
- Lightweight design at approximately 103g, reducing unnecessary bike weight
- Wide compatibility with major crankset brands including Shimano, SRAM, and Rotor
- Fits a wide range of frame shell widths for versatile use on different bike models
Cons
- Only compatible with cranksets with a 24mm shaft diameter; will not fit 22mm or other shaft size cranksets
- Requires separate purchase of installation tools, as none are included with the bracket
- Only available in red and black color options, with limited color customization
- The product description cuts off before fully detailing installation steps or torque specifications
Common Questions
What materials are used to construct this bottom bracket?
This BB386-24 bottom bracket uses an aluminum alloy frame and G3 silicon nitride ceramic bearings for smooth, long-lasting performance.
What cranksets is this bottom bracket compatible with?
It fits Shimano full-range cranksets, SRAM GXP road or MTB cranksets, Rotor 3D24 and Aldhu24 cranksets, plus any other cranksets with a 24mm shaft diameter.
What frame shell widths and press diameters does this bottom bracket support?
This bracket fits bike frames with a shell width of 68mm-73mm and a press diameter of 46mm.
Can this bottom bracket be used for both road and mountain bikes?
Yes, this bottom bracket is designed for use with both road bicycle and mountain bicycle crankset setups.
Are any tools or batteries included with this purchase?
No batteries are included, and no installation tools are provided in the packaging, so standard bike repair tools are needed for fitting.
Product information last updated on November 28, 2025