PLEASE NOTE: The T47 wrenches in the link are only compatible with ONIRII's T47 bottom bracket.

The "S" in the options refers to steel bearings and the "C" refers to ceramic bearings
24mm Series Bottom Bracket with Steel/Ceramic Bearing
Brand:ONIRII
Product: bike bottom bracket
Material: aluminum alloy, nylon, steel, ceramic
Axle: 24mm
Suitable for: road bikes, mountain bikes, gravel bikes, etc.

ONIRII new bike bottom bracket shell adopts aluminum alloy cold forging process, which increases the density of aluminum alloy material, and the density distribution of aluminum alloy internal medium is more regular. The new bearing structure is designed with steel ball/ceramic ball rolling groove, which can stabilize the rotating track of the bearing even after long time use, thus reducing the probability of rattling. The bottom bracket has a built-in 3-layer waterproof ring, with the first layer separating sand and dirt, the second layer preventing water from entering, and the third layer protecting the bearing balls. The traditional bottom bracket can only do 2 layers at most, which is the real reason why the traditional bottom bracket is easy to lack of oil and rattling after dismantling. This bottom bracket is pre-installed with threaded non-slip adhesive, which is not easy to loosen and fits the threaded frame more tightly.

Stainless steel has the advantages of stability, low noise, corrosion resistance and rust resistance during the working process. ONIRII BB uses a special steel bearing structure, adding rolling grooves on the inner wall of the bearing to ensure that its trajectory is always in a predetermined position, so as to achieve wear-resistant and durable effect, and to solve the problem of noise caused by shaking of steel balls. The specially designed waterproof washer has a tight fixing effect, isolates water intrusion, and has the functions of stability, lubrication, good rolling and durability


Silicon nitride ceramic bearings, with low density, wear-resistant, heat-resistant, corrosion-resistant, with an insulating layer, adiabatic and self-lubricating advantages, stronger overturning characteristics, increasing the service life of the bottom bracket, high wear-resistant performance, so that its roughness is better than the steel ball bearings, resulting in vibration, sliding friction and noise is smaller than the steel bearings the steel bearings
Imported applesauce grease added inside the bottom bracket for long-lasting lubrication effect

Brand:ONIRII
Model:BSA-24
Width: 68-73mm
Diameter: 34mm
Structure: thread
Bearing: steel/ceramic
Weight: 100g


Brand:ONIRII
Model:PF41-24
Width: 86-92mm
Diameter: 41mm
Structure: press-in
Bearing: steel/ceramic
Weight: 77g

Brand:ONIRII
Model:BB30-24
Width: 68-73mm
Diameter: 42mm
Structure: press-in
Bearing: steel/ceramic
Weight: 99g

Brand:ONIRII
Model:PF30-24
Diameter: 46mm
Width: 68-73mm
Structure: pair lock press-in
Bearing: steel/ceramic
Weight: 127g

Brand:ONIRII
Model:PF30-24
Width: 68-73mm
Diameter: 46mm
Structure:  press-in
Bearing: steel/ceramic
Weight: 125g

Brand:ONIRII
Model:BBright -24
Width: 79mm
Diameter: 46mm
Structure:  press-in
Bearing: steel/ceramic
Weight: 120g



Brand:ONIRII
Model:BB386-24
Width: 86.5mm
Diameter: 46mm
Structure:  press-in
Bearing: steel/ceramic
Weight: 118g

Brand:ONIRII
Model:T47-68-24
Width: 68mm
Diameter: 47mm
Structure:  thread
Bearing: steel/ceramic  
Weight: 137g

Brand:ONIRII
Model:T47-77-24
Width: 77mm
Diameter: 47mm
Structure:  thread
Bearing: steel/ceramic
Weight: 130g

Brand:ONIRII
Model:T47-85.5-24
Width: 85.5mm
Diameter: 47mm
Structure: press-in
Bearing: steel/ceramic
Weight: 125g

Pre-purchase instructions:
1, please determine your crank and frame specifications before purchase
2, If you do not know how to choose BB can contact customer service, we will recommend you the most suitable specifications.
3, the bottom bracket belongs to the wear parts, according to each person's use of the scene, intensity, installation, maintenance and other factors will affect the use of the bottom bracket, so the bottom bracket is not warranted!
4, we provide perfect installation advice, need detailed video can contact customer service!