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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
BOX Four Prime 9 Rear Shifter (8 Spd), Multi Shift - BlackPrime 9 Technology for greater simplicity and durability Available in single shift option for eMTB to keep the user from shifting multiple gears under load significantly reducing the rate of bent teeth and broken chains Multi shift option changes up to 3 gears at once for no eMTBs Box One features: die cast top shell, machined clamp, dual action relase lever, die cast release lever, and a stainless braided lo friction cable Box Two features: die cast
- Prime 9 Technology for greater simplicity and durability- Available in single shift option for eMTB to keep the user from shifting multiple gears under load significantly reducing the rate of bent teeth and broken chains
- Multi shift option changes up to 3 gears at once for no
-eMTBs
- Box One features: die cast top shell, machined clamp, dual action relase lever, die cast release lever, and a stainless braided lo-friction cable
- Box Two features: die cast top shell, extruded clamp, and dual action release lever
- Box Three features: resin top shell, and same as above
- Box Four features: 8 speeds, with Prime 9 Technology and the same construction as Box Three
- Limited Lifetime Warranty
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: 639266097396
EAN: Not available
Manufacturer Part Number: BX-SH4-08AMS-BK
BX5360 LD0054
144748-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
4.3 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 1
Shelf is nice, bracing is garbage.
Color: Black, Size: 35.6W x 11.6D x 2H, 2 Pack
Just like all the other reviews, it sags. Regardless of how its mounted to the wall, the bracing itself is weak. Shelf is nice though, definitely would have to get different brackets to make this worth it.
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Reviewed in the United States on April 29, 2026
★★★★★ 3
Decent shelf
Color: Walnut, Size: 35.6W x 11.6D x 2H, 2 Pack, Color: Walnut, Size: 35.6W x 11.6D x 2H, 2 Pack
They look great and come exactly as described. They were super easy to install and came with everything you need. Sizing is exactly as described. For the price they’re all around a great purchase. I bought these to mount under our tv for video game consoles and they are perfect.
However, they do not sit well on the wall. There’s only two mounting points when they should definitely have 3. We had to go get a shelf bracket from lowe’s to get it to sit right and not lean forward. So just beware if you want it to sit flush, you’re going to need something additional. Still worth it for the price!
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Reviewed in the United States on February 6, 2026
★★★★★ 5
Thanks to Amazon
Color: White, Size: 35.6W x 11.6D x 2H, 2 Pack
Well, one thing I have to say is we got one white shelf and one brown shelf and it did look like the box had been opened. But that being said Amazon was very wonderful and told us to keep it took it off my bill. They didn’t even charge me for it. The assembly was super easy. My husband said it was very easy to install. All he did was paint the brown and white and put it on the wall so we lucked out on that one thank you
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Works well with new hardware.
Color: White, Size: 24W x 11.6D x 2H, 2 Pack
The product is good and strong if you install the bracket securely to the wall. Do not use the supplied fasteners for sheet rock. Buy new fasteners at Home Depot that clamp tightly to the sheet rock and everything will be fine.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Black floating shelves
Color: Black, Size: 24W x 11.6D x 2H, 2 Pack, Color: Black, Size: 24W x 11.6D x 2H, 2 Pack
Look nice, not solid wood, but for the price they do the job!
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Reviewed in the United States on April 23, 2026