Ceramic BB T47-DUB Bicycle Bottom Bracket 86.5mm Width for SRAM DUB Cranksets Group Shell Axis 28.99 Aluminum Alloy Ceramic Beat
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Specifications
- Brand Name
- KACTUS TECH
- High-concerned chemical
- None
- Origin
- Mainland China
- Material
- Aluminum/Alloy
- Model Number
- T47-DUB 86.5
- Use
- Road Bicycles
- Bearing
- Ceramic Bearing
- Ceramic Beads
- G3 Silicon Nitride
- Applicable Axis
- 28.99mm/28.99mm
- Five-way Width
- 86.5mm
- Shell width
- 68mm--73mm
- Thread
- M47*1
- Weight
- About 99g
- Color
- Red,Black
- Use 2
- Both Road and Mountain Bicycles
- Material 2
- Aluminum Alloy,Ceramic Palin
Product Description
KACTUS:Ceramic Bearing Bicycle Bottom Bracket T47-DUB(86.5mm)
Fit for :SRAM DUB specification cranksets.
Brand:KACTUS TECH
Name:Bicycle Bottom Bracket
Model Number:T47-DUB(86.5mm)
Color:Black ,Red
Material:Aluminum Alloy,Ceramic Palin
Weight :About 99g（Weight does not include accessories）
Shell width:86.5mm(68mm--73mm)
Applicable Axis:φ28.99mm*φ28.99mm
Thread:M47*1
Suitable installation tools: 49-16notch
(If you need the wrench, please check the link. //www.aliexpress.com/item/1005004290955920.html )
CNC Machining Process
Heat treated CNC process Guaranteed strength Lightweight at the same time.
About G3 Silicon Nitride Ceramic Beads ：
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 rotating smoother during riding. 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 easily deformed Threaded fixing, firmly locked, 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
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
- Ceramic bearings for smoother, low-friction pedaling.
- Lightweight at 99g, aluminum alloy durability.
- Fits SRAM DUB cranks on road/MTB frames.
- T47 threading for modern frames.
Cons
- Specific to 86.5mm width and 28.99mm spindle.
- Installation requires precise threading tools.
- Weight excludes accessories, actual may vary.
- Limited color options.
Common Questions
What material and bearing type for this T47-DUB bottom bracket?
Aluminum alloy body with G3 silicon nitride ceramic bearings.
What width and compatibility for SRAM DUB cranksets?
86.5mm width, fits 68-73mm shells, 28.99mm axis for SRAM DUB.
Suitable for road or mountain bicycles?
Compatible with both road and mountain bikes using T47 threading.
Installation process for this ceramic BB?
Thread M47*1 into frame; about 99g weight excludes accessories.
Shipping from Mainland China for this KACTUS product?
7-15 business days, available in red or black.
Product information last updated on March 24, 2026