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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
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Description
Promax Banger BMX Stem - 48mm, Front Load, BlackBanger stems have a front load design and can be used with either side up, providing a 5 millimeter drop or rise. Available with 48 millimeter and 53 millimeter extensions, they are cold forged from the highest quality 6061 T6 aluminum then CNC machined to enhance the shape and further reduce weight. Uses M6 bolts Product Specifics Bar Clamp Diameter (mm): 22. 2 Color: Black Defined Color: Black Length: 48 Reach: 48 Rise: 5 Stack Height: 30. 5 Steerer
Banger stems have a front-load design and can be used with either side up, providing a 5-millimeter drop or rise. Available with 48-millimeter and 53-millimeter extensions, they are cold forged from the highest quality 6061-T6 aluminum then CNC machined to enhance the shape and further reduce weight.- Uses M6 bolts
Product Specifics
- Bar Clamp Diameter (mm): 22.2
- Color: Black
- Defined Color: Black
- Length: 48
- Reach: 48
- Rise: 5
- Stack Height: 30.5
- Steerer Clamp Diameter: 1-1/8"
- Stem Angle (deg): 0
- Stem Type: Front Load
- Weight: 269
Today's Stock Status
UPC: Not available
EAN: 4711103651209
Manufacturer Part Number: ST21-0BA75S48-BK
SM0656
182920-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 1
Would not recommend
Color: Black
Product was terrible, it was not sturdy at all
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Order with confidence!
Color: Black
Pleased with my purchase!
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Reviewed in the United States on April 26, 2026
★★★★★ 4
Awesome, portable room divider for larger rooms
Color: Black, Color: Black
I chose this room divider to use in my son's room that also serves as my home office! It is 72" x 72" in size, so it truly blocks out the other side of the room for optimal privacy. Once it's assembled, it's mildly sturdy - as long as you can bet both ends with the "feet" in line with the ground. I wish that the framework poles had more of an interlocking system so that the divider was easier to erect. I assembled this on carpet, so I had some issues getting the divider to stop moving. It takes a lot of work to set up, as it is massive, so definitely have someone help you. I would suggest adding weights of some sort to the feet of this divider to keep it from shifting. I ended up leaning mine against a bookcase shelf so it wouldn't lean. All and all, this is a great product if you are looking to make a room multipurpose.
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Reviewed in the United States on August 2, 2025
★★★★★ 5
As described
Color: Black
Light weight, easy to put together and you can disconnect the ends and just roll the whole thing nice and tight for quick out of the way storage. Pretty sturdy, doesn't fall over if you bump into it, you could use it outside but if there's a lot of light you can see through a tiny bit if you're really close but I only tested this indoors so not sure about patio types
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Reviewed in the United States on December 18, 2025
★★★★★ 2
Flimsy - choose something else
Color: Black
Very flimsy and barely stands up… better options out there.
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Reviewed in the United States on October 11, 2025