Bottom Bracket Ceramic Bearing fit for Shimano Sram GXP Rotor Aldhu Cranksets 24mm Axis Pressfit 46mm BB386-24(22) Bike Frame
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Specifications
- Brand Name
- KACTUS TECH
- Origin
- Mainland China
- Use
- Mountain Bikes
- Material
- Aluminum/Alloy
- Model Number
- BB386-24-noSleeve
- Brand
- KACTUS
- Bearing
- Ceramic Bearing
- Ceramic Beads
- G3 Silicon Nitride
- Color
- Red,Black
- Use 2
- Both Road and Mountain Bicycles
- Material 2
- Aluminum Alloy,Ceramic Palin
- Applicable Axis
- 22mm/24mm
- Five-way Width
- 86.5mm-92mm
- Shell width
- 86.5mm-92mm
- Press-in Diameter
- 46mm/46mm
- Weight
- About 81g
Product Description
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, making the cranksets smoother during rotation. Be loved and recommended by cycling enthusiasts.reducing friction.
Model Number:BB386-24 Without sleeve
Brand:KACTUS TECH
Name:Bicycle Bottom Bracket
Color:Black ,Red
Material:Aluminum Alloy,Ceramic Palin
Weight :About 81g（Weight does not include accessories）
Shell width:68mm-73mm/86.5mm-92mm
Applicable Axis:φ22mm /φ24mm
Press-in Diameter：φ46mm/φ46mm
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.
Ceramic Bearing
G3 Silicon Nitride Ceramic Axis
CNC Machining Process
Heat treated CNC process Guaranteed strength Lightweight at the same time.
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.
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.
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.
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
Product Packaging
Note: Due to different batches, the factory will replace the outer packaging of the product, please refer to the actual receipt!
Pros & Cons
Pros
- G3 Silicon Nitride ceramic beads for superior smoothness and heat resistance
- Lightweight 81g aluminum alloy for performance
- Broad compatibility with Shimano, Sram, Rotor 22/24mm cranksets
- High strength and impact resistance over metal bearings
Cons
- Specific 46mm press-fit may not fit all frames
- No sleeve version limits some installations
- Red/black colors only
- Requires precise frame width 86.5-92mm
Common Questions
What material is the Bottom Bracket Ceramic Bearing made from?
Aluminum alloy body with G3 Silicon Nitride ceramic bearings for smoothness.
What sizes fit the KACTUS TECH BB386-24 Bottom Bracket?
24mm axis, Pressfit 46mm diameter, shell width 86.5-92mm for bike frames.
Is the Ceramic Bearing compatible with Shimano, Sram cranksets?
Yes, fits Shimano, Sram GXP, Rotor Aldhu; 22/24mm axis for road/MTB.
How to install the Bike Bottom Bracket for cranksets?
Press-fit into 46mm frame; no sleeve model for direct compatibility and rotation.
Shipping weight for BB386-24(22) Bottom Bracket?
About 81g; ships from Mainland China.
Product information last updated on January 6, 2026