
KACTUS BSA DUB Bike CERAMIC Bearing Bottom Bracket 68MM-73MM for SRAM DUB Cranksets Spare MTB Road Bicycle Bottom Brackets Parts
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Specifications
- Brand Name
- NONE, KACTUS TECH
- Origin
- Mainland China, CN(Origin)
- Material
- Alloy, Aluminum/Alloy
- Model Number
- BSA DUB, BSADUB
- Use
- Road Bicycles, Road Bicycles
- Ceramic Beads
- G3 Silicon Nitride
- Use 2
- Both Road and Mountain Bicycles
- Applicable Axis
- 28.99mm/28.99mm
- Shell width
- 68mm-73mm
- Application
- Fit for SRAM DUB
- Bearing
- Ceramic Bearing
- Color
- Red,Black
- Material 2
- Aluminum Alloy,Ceramic Palin
- Five-way Width
- 68mm-73mm
- weight 2
- About 79g
Product Description
KACTUS Ceramic Bearing Bicycle Bottom Bracket BSADUB
Fit for :SRAM DUB specification cranksets.
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.
Brand:KACTUS TECH
Name:Bicycle Bottom Bracket
Model Number:BSADUB
Color:Black ,Red
Material:Aluminum Alloy,Ceramic Palin
Weight :About 79g(Weight does not include accessories)
Shell width:68mm-73mm
Applicable Axis:φ28.99mm /φ28.99mm
Ceramic Bearing
G3 Silicon Nitride Ceramic Axis
01.CNC Machining Process
Heat treated CNC process Guaranteed strength Lightweight at the same time.
02.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.
03.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.
04.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<<
05.Bottom Parts
Lightweight aluminum alloy is not easily deformed Built-in rubber ring to prevent
dust from entering.
06.Multicolor Options
Two colors of the product can be selected, you can choose according to your
preferences there is always one suitable for you.
07.Laser Tech
Laser etching technology, clear handwriting, good quality.
08.Delicate Thread
Rotating thread design, lock firmly and more stable.
09.Product physical photos
The product is taken in kind and displayed from multiple angles, showing you
more different product scenarios
10.Product Packaging
Note: Due to different batches, the factory will replace the outer packaging of
the product, please refer to the actual receipt!
SHIPMENT
1.When you place an order, please choose a shipping method and pay for the order including the shipping fee.
2.Orders processed within 1~7days once your payment is completed.
3.The shipping fee does not include any import taxes, and buyers are responsible for customs duties.
4.Please note that buyers are responsible for all additional customs fees, brokerage fees,duties, and taxes for importation into your country. These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments.
5.We only ship to CONFIRMED ORDER ADDRESS,Your order address MUST MATCH your shipping address.
6.We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries,But If you have not received your shipment within 60 to 90 days from payment, please contact us firstly.
1) We will track the shipment and get back to you wihtin 24hours.
2) We will assist you to get full refund or a new package if your package cannot be delivered due to overtime or other reason becaue of logistics problem.
7.Normally your parcels will be delivered on time. When you choose different logistics methods, you can see the reference delivery time given by the Aliexpress platform. In case of special disasters or major events will cause logistics delays,please understand.Thank you.
8.Tracking site:
1) //www.17track.net/ (China Post Registered Air Mail )
2) //global.cainiao.com/ (by Aliexpress Standard Shipping )
SHOPPING NOTICE
1.About Color Difference:The product will have slight color difference because of the computer monitor,If you are particularly concerned it,please contact us to take a photo for your reference.
2.About Packaging:As well as the upgrading of packaging and different batches of the product , the packing box may not be exactly same with the picture show,please understand.
3.About Product Appearance:If you are buying a bicyle spare part product, there may be subtle differences in appearance due to the modification of the product mold or process. Please understand that the product you buy must be quality guaranteed.
Pros & Cons
Pros
- G3 Silicon Nitride ceramic bearings offer superior strength, impact resistance, and wear over metal
- Lightweight at 79g aluminum alloy construction for better bike performance
- Broad compatibility with SRAM DUB cranksets on 68-73mm shells for MTB and road
- Smooth rotation reduces friction for efficient pedaling
Cons
- Specific to SRAM DUB, not universal for all cranksets
- Higher cost due to premium ceramic bearings
- No brand consistency (NONE or KACTUS TECH)
- Installation requires precise BSA threading tools
Common Questions
What material is used in the KACTUS BSA DUB bottom bracket?
Aluminum alloy body with G3 Silicon Nitride ceramic bearings for high strength and wear resistance.
What sizes does this bottom bracket fit?
Shell width 68mm-73mm, applicable axis 28.99mm, compatible with SRAM DUB cranksets.
Is this bottom bracket suitable for both MTB and road bikes?
Yes, designed for both road bicycles and mountain bikes with SRAM DUB cranksets.
How do I install this ceramic bearing bottom bracket?
Standard BSA threading; fits 68-73mm shells, use for SRAM DUB cranks; professional bike shop install recommended.
What is the weight and color options for this KACTUS bottom bracket?
Approximately 79g; available in red or black.
Product information last updated on March 18, 2026
