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- USA
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Promax SP-877 Suspension Seatpost - 31.6 x 350mm, BlackThe Promax suspension seatpost is designed to let you ride further, longer, faster and more comfortably. With 40mm of travel, it's perfect for taking the edge off commutes, gravel rides, off road ventures or spins around the neighborhood. 40mm of suspended travel takes the edge off any ride Designed to limit any side to side play Dual bolt saddle clamp Weight Limit: 120 Kg (264 lbs) Product Specifics Length: 350 Travel (mm): 40 Material: Aluminum
The Promax suspension seatpost is designed to let you ride further, longer, faster and more comfortably. With 40mm of travel, it's perfect for taking the edge off commutes, gravel rides, off road ventures or spins around the neighborhood.- 40mm of suspended travel takes the edge off any ride
- Designed to limit any side-to-side play
- Dual bolt saddle clamp
- Weight Limit: 120 Kg (264 lbs)
Product Specifics
- Length: 350
- Travel (mm): 40
- Material: Aluminum
- Clamp Style: Standard Rails
- Offset (mm): 12
- Color: Black
- Weight: 425
- Diameter: 31.6
- Defined Color: Black
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: Not available
EAN: 4711103651193
Manufacturer Part Number: SP21-SP877316-BK
ST0048
182919-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 2439 reviews
Sort
Product Reviews
★★★★★ 4
Best pillow I’ve ever tried—hands down!
Size: Queen, Number of Items: 2
I’ve gone through a bunch of pillows over the years, but this BETU Cooling Pillow is by far the best one I’ve ever used. I sleep in literally every position—on my back, stomach, and sides—and this pillow works perfectly no matter how I’m laying.
It really does have a cooling effect, which I love as a hot sleeper. Just make sure your room is cool too, and it makes a big difference. It came vacuum-packed, but it fully expanded within just a few hours. I was able to sleep on it the same day it arrived, and it was super comfy right from the start.
I also washed and dried the pillowcase before using it, and it came out looking and feeling great—no shrinking or damage at all. Honestly, I look forward to going to bed every night now just because of this pillow. It’s supportive, comfortable, and totally worth it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
★★★★★ 5
Excellent pillows!
Size: Queen, Number of Items: 2
This pack came with 2 pillows, one firm and one that was flatter and squishy. I absolutely love the flatter one! Most comfortable pillow I've ever used! The firm one was a bit too much for me, but my husband loves it.
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Reviewed in the United States on March 28, 2026
★★★★★ 3
It’s alright.
Size: Queen, Number of Items: 2
Not bad pillows. They are comfortable but mine came with an odd odor, kind of mildewy smell to it. Had to spray it down to tolerate sleeping on it.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Nice pillows
Size: Queen, Number of Items: 2
Have had these a few months and so far really like them!
They don’t really feel very cooling, but I also run VERY HOT so it could just be me. The foam holds up well and hasn’t flattened like others I’ve tried.
They come very compacted- I was shocked how much they expanded!
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Mr.b
Size: Standard, Number of Items: 2
The pillows are cool and comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
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