Best in 7 days
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Shipping Estimate
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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 16 - Jun 21
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
FMFXTR Aluminum Alloy Mountain Bike Extended Seat Post, Specification:31.6x350mm(Red)1. The tube body is equipped with a safety line, with clear identification and easy installation. 2. About 3mm thick pipe wall, not easy to break 3. Aluminum alloy material, sturdy and durable 4. Material: 6061 aluminum alloy 5. Adaptation: generally suitable for folding bikes, mountain bikes 6. Diameter: about 25. 4 27. 2 28. 6 31. 6mm 7. Length: about 35cm 8. Weight: about 163 grams for 25. 4mm, about 188 grams for 27. 2mm, about 186 grams for 28.
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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 2463 reviews
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Product Reviews
★★★★★ 5
Excellent
Size: X-Large, Color: (025) Castlerock / Castlerock / Anthracite
Excellent product
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Fit great
Size: Large, Color: (100) White / White / Halo Gray
Been a couple of months and they seem to be holding up nicely. Real picky about fit of socks and these fit well. They are very thin but very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2024
★★★★★ 5
Always a win
Size: Large, Color: (001) Black / Black / Castlerock
Under armor is always a win! Comfortable, no peeling, true to size, no squeezing around the arch of foot & affordable.
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Reviewed in the United States on January 4, 2026
★★★★★ 4
Fit well and stay up
Size: Large, Color: (299) City Khaki / City Khaki / White
They're a little thin, so good mainly for warmer months. But they fit very well and I've not experienced any slippage
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Llego a tiempo
Size: X-Large, Color: (001) Black / Black / Castlerock
Bien
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Reviewed in the United States on April 28, 2026
